Finding the Fourth Proportional to 78,592.29, 108,457.37 and 42,782.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,592.29 : 108,457.37 = 42,782.57 : x
2. Step 2: Convert to fraction form
   78,592.29/108,457.37 = 42,782.57/x
3. Step 3: Cross multiply
   78,592.29x = 108,457.37 × 42,782.57
4. Step 4: Simplify right side
   78,592.29x = 4,640,084,538.98
5. Step 5: Solve for x
   x = 4,640,084,538.98/78,592.29
6. Step 6: Final answer
   x = 59,039.95