Finding the Fourth Proportional to 78,592.08, 108,457.32 and 42,782.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,592.08 : 108,457.32 = 42,782.40 : x
2. Step 2: Convert to fraction form
   78,592.08/108,457.32 = 42,782.40/x
3. Step 3: Cross multiply
   78,592.08x = 108,457.32 × 42,782.40
4. Step 4: Simplify right side
   78,592.08x = 4,640,064,447.17
5. Step 5: Solve for x
   x = 4,640,064,447.17/78,592.08
6. Step 6: Final answer
   x = 59,039.85