Finding the Fourth Proportional to 131,274.72, 196,943.12 and 42,528.08

Step by Step Solution

1. Step 1: Write the proportion equation
   131,274.72 : 196,943.12 = 42,528.08 : x
2. Step 2: Convert to fraction form
   131,274.72/196,943.12 = 42,528.08/x
3. Step 3: Cross multiply
   131,274.72x = 196,943.12 × 42,528.08
4. Step 4: Simplify right side
   131,274.72x = 8,375,612,762.81
5. Step 5: Solve for x
   x = 8,375,612,762.81/131,274.72
6. Step 6: Final answer
   x = 63,802.18