Finding the Fourth Proportional to 72,700.84, 109,006.61 and 28,275.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,700.84 : 109,006.61 = 28,275.83 : x
2. Step 2: Convert to fraction form
   72,700.84/109,006.61 = 28,275.83/x
3. Step 3: Cross multiply
   72,700.84x = 109,006.61 × 28,275.83
4. Step 4: Simplify right side
   72,700.84x = 3,082,251,686.82
5. Step 5: Solve for x
   x = 3,082,251,686.82/72,700.84
6. Step 6: Final answer
   x = 42,396.37