Finding the Fourth Proportional to 106,644, 147,168.72 and 61,934.88

Step by Step Solution

1. Step 1: Write the proportion equation
   106,644 : 147,168.72 = 61,934.88 : x
2. Step 2: Convert to fraction form
   106,644/147,168.72 = 61,934.88/x
3. Step 3: Cross multiply
   106,644x = 147,168.72 × 61,934.88
4. Step 4: Simplify right side
   106,644x = 9,114,877,012.95
5. Step 5: Solve for x
   x = 9,114,877,012.95/106,644
6. Step 6: Final answer
   x = 85,470.13