Finding the Fourth Proportional to 57,130.47, 78,815.59 and 34,456.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,130.47 : 78,815.59 = 34,456.56 : x
2. Step 2: Convert to fraction form
   57,130.47/78,815.59 = 34,456.56/x
3. Step 3: Cross multiply
   57,130.47x = 78,815.59 × 34,456.56
4. Step 4: Simplify right side
   57,130.47x = 2,715,714,105.77
5. Step 5: Solve for x
   x = 2,715,714,105.77/57,130.47
6. Step 6: Final answer
   x = 47,535.30