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Finding the Fourth Proportional to 72,400.06, 108,585.51 and 19,814.86

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Solution

The fourth proportional to 72,400.06, 108,585.51 and 19,814.86 is: 29,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.06 : 108,585.51 = 19,814.86 : x
  2. Step 2: Convert to fraction form
    72,400.06/108,585.51 = 19,814.86/x
  3. Step 3: Cross multiply
    72,400.06x = 108,585.51 × 19,814.86
  4. Step 4: Simplify right side
    72,400.06x = 2,151,606,678.68
  5. Step 5: Solve for x
    x = 2,151,606,678.68/72,400.06
  6. Step 6: Final answer
    x = 29,718.30

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