Finding the Fourth Proportional to 91,598.91, 137,418.06 and 28,417.74

Step by Step Solution

1. Step 1: Write the proportion equation
   91,598.91 : 137,418.06 = 28,417.74 : x
2. Step 2: Convert to fraction form
   91,598.91/137,418.06 = 28,417.74/x
3. Step 3: Cross multiply
   91,598.91x = 137,418.06 × 28,417.74
4. Step 4: Simplify right side
   91,598.91x = 3,905,110,700.38
5. Step 5: Solve for x
   x = 3,905,110,700.38/91,598.91
6. Step 6: Final answer
   x = 42,632.72