Finding the Fourth Proportional to 57,123.62, 78,830.55 and 31,973.12

Step by Step Solution

1. Step 1: Write the proportion equation
   57,123.62 : 78,830.55 = 31,973.12 : x
2. Step 2: Convert to fraction form
   57,123.62/78,830.55 = 31,973.12/x
3. Step 3: Cross multiply
   57,123.62x = 78,830.55 × 31,973.12
4. Step 4: Simplify right side
   57,123.62x = 2,520,458,634.82
5. Step 5: Solve for x
   x = 2,520,458,634.82/57,123.62
6. Step 6: Final answer
   x = 44,122.88