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Finding the Fourth Proportional to 28,978,657.20, 43,495,979.40 and 17,641,249.20

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Solution

The fourth proportional to 28,978,657.20, 43,495,979.40 and 17,641,249.20 is: 26,478,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,657.20 : 43,495,979.40 = 17,641,249.20 : x
  2. Step 2: Convert to fraction form
    28,978,657.20/43,495,979.40 = 17,641,249.20/x
  3. Step 3: Cross multiply
    28,978,657.20x = 43,495,979.40 × 17,641,249.20
  4. Step 4: Simplify right side
    28,978,657.20x = 767,323,411,793,466.38
  5. Step 5: Solve for x
    x = 767,323,411,793,466.38/28,978,657.20
  6. Step 6: Final answer
    x = 26,478,915.38

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