Finding the Fourth Proportional to 57,123.36, 78,830.20 and 31,972.84

Step by Step Solution

1. Step 1: Write the proportion equation
   57,123.36 : 78,830.20 = 31,972.84 : x
2. Step 2: Convert to fraction form
   57,123.36/78,830.20 = 31,972.84/x
3. Step 3: Cross multiply
   57,123.36x = 78,830.20 × 31,972.84
4. Step 4: Simplify right side
   57,123.36x = 2,520,425,371.77
5. Step 5: Solve for x
   x = 2,520,425,371.77/57,123.36
6. Step 6: Final answer
   x = 44,122.50