Finding the Fourth Proportional to 78,592.32, 108,457.41 and 42,782.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,592.32 : 108,457.41 = 42,782.60 : x
2. Step 2: Convert to fraction form
   78,592.32/108,457.41 = 42,782.60/x
3. Step 3: Cross multiply
   78,592.32x = 108,457.41 × 42,782.60
4. Step 4: Simplify right side
   78,592.32x = 4,640,089,717.92
5. Step 5: Solve for x
   x = 4,640,089,717.92/78,592.32
6. Step 6: Final answer
   x = 59,039.99