Finding the Fourth Proportional to 157,820.47, 217,783.42 and 89,854.05

Step by Step Solution

1. Step 1: Write the proportion equation
   157,820.47 : 217,783.42 = 89,854.05 : x
2. Step 2: Convert to fraction form
   157,820.47/217,783.42 = 89,854.05/x
3. Step 3: Cross multiply
   157,820.47x = 217,783.42 × 89,854.05
4. Step 4: Simplify right side
   157,820.47x = 19,568,722,309.85
5. Step 5: Solve for x
   x = 19,568,722,309.85/157,820.47
6. Step 6: Final answer
   x = 123,993.56