Finding the Fourth Proportional to 57,061.72, 78,720.41 and 34,387.83

Step by Step Solution

1. Step 1: Write the proportion equation
   57,061.72 : 78,720.41 = 34,387.83 : x
2. Step 2: Convert to fraction form
   57,061.72/78,720.41 = 34,387.83/x
3. Step 3: Cross multiply
   57,061.72x = 78,720.41 × 34,387.83
4. Step 4: Simplify right side
   57,061.72x = 2,707,024,162.58
5. Step 5: Solve for x
   x = 2,707,024,162.58/57,061.72
6. Step 6: Final answer
   x = 47,440.29