Finding the Fourth Proportional to 91,490.27, 137,201.27 and 31,501.80

Step by Step Solution

1. Step 1: Write the proportion equation
   91,490.27 : 137,201.27 = 31,501.80 : x
2. Step 2: Convert to fraction form
   91,490.27/137,201.27 = 31,501.80/x
3. Step 3: Cross multiply
   91,490.27x = 137,201.27 × 31,501.80
4. Step 4: Simplify right side
   91,490.27x = 4,322,086,809.78
5. Step 5: Solve for x
   x = 4,322,086,809.78/91,490.27
6. Step 6: Final answer
   x = 47,240.95