Finding the Fourth Proportional to 72,557.69, 108,815.85 and 28,174.95

Step by Step Solution

1. Step 1: Write the proportion equation
   72,557.69 : 108,815.85 = 28,174.95 : x
2. Step 2: Convert to fraction form
   72,557.69/108,815.85 = 28,174.95/x
3. Step 3: Cross multiply
   72,557.69x = 108,815.85 × 28,174.95
4. Step 4: Simplify right side
   72,557.69x = 3,065,881,132.96
5. Step 5: Solve for x
   x = 3,065,881,132.96/72,557.69
6. Step 6: Final answer
   x = 42,254.40