Finding the Fourth Proportional to 60,691.62, 91,042.89 and 20,697.06

Step by Step Solution

1. Step 1: Write the proportion equation
   60,691.62 : 91,042.89 = 20,697.06 : x
2. Step 2: Convert to fraction form
   60,691.62/91,042.89 = 20,697.06/x
3. Step 3: Cross multiply
   60,691.62x = 91,042.89 × 20,697.06
4. Step 4: Simplify right side
   60,691.62x = 1,884,320,156.90
5. Step 5: Solve for x
   x = 1,884,320,156.90/60,691.62
6. Step 6: Final answer
   x = 31,047.45