Finding the Fourth Proportional to 91,064.73, 136,513.89 and 31,868.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,064.73 : 136,513.89 = 31,868.12 : x
2. Step 2: Convert to fraction form
   91,064.73/136,513.89 = 31,868.12/x
3. Step 3: Cross multiply
   91,064.73x = 136,513.89 × 31,868.12
4. Step 4: Simplify right side
   91,064.73x = 4,350,440,345.62
5. Step 5: Solve for x
   x = 4,350,440,345.62/91,064.73
6. Step 6: Final answer
   x = 47,773.05