Finding the Fourth Proportional to 74,725.71, 103,117.72 and 42,456.10

Step by Step Solution

1. Step 1: Write the proportion equation
   74,725.71 : 103,117.72 = 42,456.10 : x
2. Step 2: Convert to fraction form
   74,725.71/103,117.72 = 42,456.10/x
3. Step 3: Cross multiply
   74,725.71x = 103,117.72 × 42,456.10
4. Step 4: Simplify right side
   74,725.71x = 4,377,976,019.81
5. Step 5: Solve for x
   x = 4,377,976,019.81/74,725.71
6. Step 6: Final answer
   x = 58,587.28