Finding the Fourth Proportional to 78,360, 108,136.86 and 42,550.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,360 : 108,136.86 = 42,550.02 : x
2. Step 2: Convert to fraction form
   78,360/108,136.86 = 42,550.02/x
3. Step 3: Cross multiply
   78,360x = 108,136.86 × 42,550.02
4. Step 4: Simplify right side
   78,360x = 4,601,225,555.74
5. Step 5: Solve for x
   x = 4,601,225,555.74/78,360
6. Step 6: Final answer
   x = 58,719.06