Finding the Fourth Proportional to 91,116.72, 136,675.98 and 31,953.81

Step by Step Solution

1. Step 1: Write the proportion equation
   91,116.72 : 136,675.98 = 31,953.81 : x
2. Step 2: Convert to fraction form
   91,116.72/136,675.98 = 31,953.81/x
3. Step 3: Cross multiply
   91,116.72x = 136,675.98 × 31,953.81
4. Step 4: Simplify right side
   91,116.72x = 4,367,318,296.48
5. Step 5: Solve for x
   x = 4,367,318,296.48/91,116.72
6. Step 6: Final answer
   x = 47,931.03