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Finding the Fourth Proportional to 74,431.71, 102,720.35 and 42,599.93

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Solution

The fourth proportional to 74,431.71, 102,720.35 and 42,599.93 is: 58,790.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,431.71 : 102,720.35 = 42,599.93 : x
  2. Step 2: Convert to fraction form
    74,431.71/102,720.35 = 42,599.93/x
  3. Step 3: Cross multiply
    74,431.71x = 102,720.35 × 42,599.93
  4. Step 4: Simplify right side
    74,431.71x = 4,375,879,312.47
  5. Step 5: Solve for x
    x = 4,375,879,312.47/74,431.71
  6. Step 6: Final answer
    x = 58,790.53

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