Finding the Fourth Proportional to 78,604.12, 108,476.52 and 42,792.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,604.12 : 108,476.52 = 42,792.40 : x
2. Step 2: Convert to fraction form
   78,604.12/108,476.52 = 42,792.40/x
3. Step 3: Cross multiply
   78,604.12x = 108,476.52 × 42,792.40
4. Step 4: Simplify right side
   78,604.12x = 4,641,970,634.45
5. Step 5: Solve for x
   x = 4,641,970,634.45/78,604.12
6. Step 6: Final answer
   x = 59,055.06