Finding the Fourth Proportional to 142,641.23, 213,841.42 and 89,934.53

Step by Step Solution

1. Step 1: Write the proportion equation
   142,641.23 : 213,841.42 = 89,934.53 : x
2. Step 2: Convert to fraction form
   142,641.23/213,841.42 = 89,934.53/x
3. Step 3: Cross multiply
   142,641.23x = 213,841.42 × 89,934.53
4. Step 4: Simplify right side
   142,641.23x = 19,231,726,308.19
5. Step 5: Solve for x
   x = 19,231,726,308.19/142,641.23
6. Step 6: Final answer
   x = 134,825.86