Finding the Fourth Proportional to 141,420.57, 212,152.72 and 88,071.74

Step by Step Solution

1. Step 1: Write the proportion equation
   141,420.57 : 212,152.72 = 88,071.74 : x
2. Step 2: Convert to fraction form
   141,420.57/212,152.72 = 88,071.74/x
3. Step 3: Cross multiply
   141,420.57x = 212,152.72 × 88,071.74
4. Step 4: Simplify right side
   141,420.57x = 18,684,659,196.13
5. Step 5: Solve for x
   x = 18,684,659,196.13/141,420.57
6. Step 6: Final answer
   x = 132,121.23