Finding the Fourth Proportional to 72,664.71, 108,802.96 and 42,654.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,664.71 : 108,802.96 = 42,654.06 : x
2. Step 2: Convert to fraction form
   72,664.71/108,802.96 = 42,654.06/x
3. Step 3: Cross multiply
   72,664.71x = 108,802.96 × 42,654.06
4. Step 4: Simplify right side
   72,664.71x = 4,640,887,877.38
5. Step 5: Solve for x
   x = 4,640,887,877.38/72,664.71
6. Step 6: Final answer
   x = 63,867.15