Finding the Fourth Proportional to 78,152.80, 107,850.72 and 42,343.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,152.80 : 107,850.72 = 42,343.72 : x
2. Step 2: Convert to fraction form
   78,152.80/107,850.72 = 42,343.72/x
3. Step 3: Cross multiply
   78,152.80x = 107,850.72 × 42,343.72
4. Step 4: Simplify right side
   78,152.80x = 4,566,800,689.48
5. Step 5: Solve for x
   x = 4,566,800,689.48/78,152.80
6. Step 6: Final answer
   x = 58,434.26