Finding the Fourth Proportional to 78,515.55, 108,350.55 and 42,704.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,515.55 : 108,350.55 = 42,704.79 : x
2. Step 2: Convert to fraction form
   78,515.55/108,350.55 = 42,704.79/x
3. Step 3: Cross multiply
   78,515.55x = 108,350.55 × 42,704.79
4. Step 4: Simplify right side
   78,515.55x = 4,627,087,484.13
5. Step 5: Solve for x
   x = 4,627,087,484.13/78,515.55
6. Step 6: Final answer
   x = 58,932.12