Finding the Fourth Proportional to 158,357.48, 218,533.00 and 85,760.15

Step by Step Solution

1. Step 1: Write the proportion equation
   158,357.48 : 218,533.00 = 85,760.15 : x
2. Step 2: Convert to fraction form
   158,357.48/218,533.00 = 85,760.15/x
3. Step 3: Cross multiply
   158,357.48x = 218,533.00 × 85,760.15
4. Step 4: Simplify right side
   158,357.48x = 18,741,421,801.83
5. Step 5: Solve for x
   x = 18,741,421,801.83/158,357.48
6. Step 6: Final answer
   x = 118,348.82