Finding the Fourth Proportional to 72,038.01, 99,414.04 and 39,772.53

Step by Step Solution

1. Step 1: Write the proportion equation
   72,038.01 : 99,414.04 = 39,772.53 : x
2. Step 2: Convert to fraction form
   72,038.01/99,414.04 = 39,772.53/x
3. Step 3: Cross multiply
   72,038.01x = 99,414.04 × 39,772.53
4. Step 4: Simplify right side
   72,038.01x = 3,953,947,888.32
5. Step 5: Solve for x
   x = 3,953,947,888.32/72,038.01
6. Step 6: Final answer
   x = 54,886.97