Finding the Fourth Proportional to 357,923.35, 536,872.71 and 91,686.16

Step by Step Solution

1. Step 1: Write the proportion equation
   357,923.35 : 536,872.71 = 91,686.16 : x
2. Step 2: Convert to fraction form
   357,923.35/536,872.71 = 91,686.16/x
3. Step 3: Cross multiply
   357,923.35x = 536,872.71 × 91,686.16
4. Step 4: Simplify right side
   357,923.35x = 49,223,797,188.69
5. Step 5: Solve for x
   x = 49,223,797,188.69/357,923.35
6. Step 6: Final answer
   x = 137,526.09