Finding the Fourth Proportional to 357,456.27, 536,184.06 and 91,216.78

Step by Step Solution

1. Step 1: Write the proportion equation
   357,456.27 : 536,184.06 = 91,216.78 : x
2. Step 2: Convert to fraction form
   357,456.27/536,184.06 = 91,216.78/x
3. Step 3: Cross multiply
   357,456.27x = 536,184.06 × 91,216.78
4. Step 4: Simplify right side
   357,456.27x = 48,908,983,077.52
5. Step 5: Solve for x
   x = 48,908,983,077.52/357,456.27
6. Step 6: Final answer
   x = 136,825.08