Finding the Fourth Proportional to 146,123.09, 201,695.81 and 85,718.15

Step by Step Solution

1. Step 1: Write the proportion equation
   146,123.09 : 201,695.81 = 85,718.15 : x
2. Step 2: Convert to fraction form
   146,123.09/201,695.81 = 85,718.15/x
3. Step 3: Cross multiply
   146,123.09x = 201,695.81 × 85,718.15
4. Step 4: Simplify right side
   146,123.09x = 17,288,991,695.95
5. Step 5: Solve for x
   x = 17,288,991,695.95/146,123.09
6. Step 6: Final answer
   x = 118,318.00