Finding the Fourth Proportional to 57,071.50, 78,761.00 and 31,577.45

Step by Step Solution

1. Step 1: Write the proportion equation
   57,071.50 : 78,761.00 = 31,577.45 : x
2. Step 2: Convert to fraction form
   57,071.50/78,761.00 = 31,577.45/x
3. Step 3: Cross multiply
   57,071.50x = 78,761.00 × 31,577.45
4. Step 4: Simplify right side
   57,071.50x = 2,487,071,667.11
5. Step 5: Solve for x
   x = 2,487,071,667.11/57,071.50
6. Step 6: Final answer
   x = 43,578.17