Finding the Fourth Proportional to 91,426.46, 137,152.80 and 28,252.10

Step by Step Solution

1. Step 1: Write the proportion equation
   91,426.46 : 137,152.80 = 28,252.10 : x
2. Step 2: Convert to fraction form
   91,426.46/137,152.80 = 28,252.10/x
3. Step 3: Cross multiply
   91,426.46x = 137,152.80 × 28,252.10
4. Step 4: Simplify right side
   91,426.46x = 3,874,854,963.76
5. Step 5: Solve for x
   x = 3,874,854,963.76/91,426.46
6. Step 6: Final answer
   x = 42,382.20