Finding the Fourth Proportional to 57,152.07, 78,870.09 and 31,657.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,152.07 : 78,870.09 = 31,657.88 : x
2. Step 2: Convert to fraction form
   57,152.07/78,870.09 = 31,657.88/x
3. Step 3: Cross multiply
   57,152.07x = 78,870.09 × 31,657.88
4. Step 4: Simplify right side
   57,152.07x = 2,496,859,450.46
5. Step 5: Solve for x
   x = 2,496,859,450.46/57,152.07
6. Step 6: Final answer
   x = 43,688.00