Finding the Fourth Proportional to 61,200.18, 91,726.45 and 31,601.88

Step by Step Solution

1. Step 1: Write the proportion equation
   61,200.18 : 91,726.45 = 31,601.88 : x
2. Step 2: Convert to fraction form
   61,200.18/91,726.45 = 31,601.88/x
3. Step 3: Cross multiply
   61,200.18x = 91,726.45 × 31,601.88
4. Step 4: Simplify right side
   61,200.18x = 2,898,728,186.72
5. Step 5: Solve for x
   x = 2,898,728,186.72/61,200.18
6. Step 6: Final answer
   x = 47,364.70