Finding the Fourth Proportional to 91,666.89, 137,510.06 and 39,081.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,666.89 : 137,510.06 = 39,081.69 : x
2. Step 2: Convert to fraction form
   91,666.89/137,510.06 = 39,081.69/x
3. Step 3: Cross multiply
   91,666.89x = 137,510.06 × 39,081.69
4. Step 4: Simplify right side
   91,666.89x = 5,374,125,341.39
5. Step 5: Solve for x
   x = 5,374,125,341.39/91,666.89
6. Step 6: Final answer
   x = 58,626.68