Finding the Fourth Proportional to 152,781.60, 210,863.88 and 89,119.34

Step by Step Solution

1. Step 1: Write the proportion equation
   152,781.60 : 210,863.88 = 89,119.34 : x
2. Step 2: Convert to fraction form
   152,781.60/210,863.88 = 89,119.34/x
3. Step 3: Cross multiply
   152,781.60x = 210,863.88 × 89,119.34
4. Step 4: Simplify right side
   152,781.60x = 18,792,048,761.12
5. Step 5: Solve for x
   x = 18,792,048,761.12/152,781.60
6. Step 6: Final answer
   x = 122,999.42