Finding the Fourth Proportional to 78,602.48, 108,470.78 and 42,792.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,602.48 : 108,470.78 = 42,792.42 : x
2. Step 2: Convert to fraction form
   78,602.48/108,470.78 = 42,792.42/x
3. Step 3: Cross multiply
   78,602.48x = 108,470.78 × 42,792.42
4. Step 4: Simplify right side
   78,602.48x = 4,641,726,961.53
5. Step 5: Solve for x
   x = 4,641,726,961.53/78,602.48
6. Step 6: Final answer
   x = 59,053.19