Finding the Fourth Proportional to 91,238.54, 136,861.60 and 31,308.22

Step by Step Solution

1. Step 1: Write the proportion equation
   91,238.54 : 136,861.60 = 31,308.22 : x
2. Step 2: Convert to fraction form
   91,238.54/136,861.60 = 31,308.22/x
3. Step 3: Cross multiply
   91,238.54x = 136,861.60 × 31,308.22
4. Step 4: Simplify right side
   91,238.54x = 4,284,893,082.35
5. Step 5: Solve for x
   x = 4,284,893,082.35/91,238.54
6. Step 6: Final answer
   x = 46,963.63