Finding the Fourth Proportional to 78,560.72, 108,414 and 42,750.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,560.72 : 108,414 = 42,750.72 : x
2. Step 2: Convert to fraction form
   78,560.72/108,414 = 42,750.72/x
3. Step 3: Cross multiply
   78,560.72x = 108,414 × 42,750.72
4. Step 4: Simplify right side
   78,560.72x = 4,634,776,558.08
5. Step 5: Solve for x
   x = 4,634,776,558.08/78,560.72
6. Step 6: Final answer
   x = 58,996.11