Finding the Fourth Proportional to 157,002.75, 216,662.72 and 85,382.60

Step by Step Solution

1. Step 1: Write the proportion equation
   157,002.75 : 216,662.72 = 85,382.60 : x
2. Step 2: Convert to fraction form
   157,002.75/216,662.72 = 85,382.60/x
3. Step 3: Cross multiply
   157,002.75x = 216,662.72 × 85,382.60
4. Step 4: Simplify right side
   157,002.75x = 18,499,224,846.45
5. Step 5: Solve for x
   x = 18,499,224,846.45/157,002.75
6. Step 6: Final answer
   x = 117,827.39