Finding the Fourth Proportional to 78,060.57, 107,723.50 and 42,250.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,060.57 : 107,723.50 = 42,250.47 : x
2. Step 2: Convert to fraction form
   78,060.57/107,723.50 = 42,250.47/x
3. Step 3: Cross multiply
   78,060.57x = 107,723.50 × 42,250.47
4. Step 4: Simplify right side
   78,060.57x = 4,551,368,505.05
5. Step 5: Solve for x
   x = 4,551,368,505.05/78,060.57
6. Step 6: Final answer
   x = 58,305.60