Finding the Fourth Proportional to 78,592.15, 108,457.17 and 42,782.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,592.15 : 108,457.17 = 42,782.42 : x
2. Step 2: Convert to fraction form
   78,592.15/108,457.17 = 42,782.42/x
3. Step 3: Cross multiply
   78,592.15x = 108,457.17 × 42,782.42
4. Step 4: Simplify right side
   78,592.15x = 4,640,060,550.31
5. Step 5: Solve for x
   x = 4,640,060,550.31/78,592.15
6. Step 6: Final answer
   x = 59,039.74