Finding the Fourth Proportional to 141,632.79, 212,580.42 and 71,561.31

Step by Step Solution

1. Step 1: Write the proportion equation
   141,632.79 : 212,580.42 = 71,561.31 : x
2. Step 2: Convert to fraction form
   141,632.79/212,580.42 = 71,561.31/x
3. Step 3: Cross multiply
   141,632.79x = 212,580.42 × 71,561.31
4. Step 4: Simplify right side
   141,632.79x = 15,212,533,335.55
5. Step 5: Solve for x
   x = 15,212,533,335.55/141,632.79
6. Step 6: Final answer
   x = 107,408.27