Finding the Fourth Proportional to 94,931.36, 142,134.56 and 71,486.72

Step by Step Solution

1. Step 1: Write the proportion equation
   94,931.36 : 142,134.56 = 71,486.72 : x
2. Step 2: Convert to fraction form
   94,931.36/142,134.56 = 71,486.72/x
3. Step 3: Cross multiply
   94,931.36x = 142,134.56 × 71,486.72
4. Step 4: Simplify right side
   94,931.36x = 10,160,733,493.04
5. Step 5: Solve for x
   x = 10,160,733,493.04/94,931.36
6. Step 6: Final answer
   x = 107,032.42