Finding the Fourth Proportional to 72,862.40, 109,123.49 and 56,089.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,862.40 : 109,123.49 = 56,089.34 : x
2. Step 2: Convert to fraction form
   72,862.40/109,123.49 = 56,089.34/x
3. Step 3: Cross multiply
   72,862.40x = 109,123.49 × 56,089.34
4. Step 4: Simplify right side
   72,862.40x = 6,120,664,532.60
5. Step 5: Solve for x
   x = 6,120,664,532.60/72,862.40
6. Step 6: Final answer
   x = 84,003.06