Finding the Fourth Proportional to 91,013.42, 136,581.65 and 31,849.61

Step by Step Solution

1. Step 1: Write the proportion equation
   91,013.42 : 136,581.65 = 31,849.61 : x
2. Step 2: Convert to fraction form
   91,013.42/136,581.65 = 31,849.61/x
3. Step 3: Cross multiply
   91,013.42x = 136,581.65 × 31,849.61
4. Step 4: Simplify right side
   91,013.42x = 4,350,071,443.50
5. Step 5: Solve for x
   x = 4,350,071,443.50/91,013.42
6. Step 6: Final answer
   x = 47,795.94