Finding the Fourth Proportional to 92,697.68, 138,939.42 and 42,672.89

Step by Step Solution

1. Step 1: Write the proportion equation
   92,697.68 : 138,939.42 = 42,672.89 : x
2. Step 2: Convert to fraction form
   92,697.68/138,939.42 = 42,672.89/x
3. Step 3: Cross multiply
   92,697.68x = 138,939.42 × 42,672.89
4. Step 4: Simplify right side
   92,697.68x = 5,928,946,586.32
5. Step 5: Solve for x
   x = 5,928,946,586.32/92,697.68
6. Step 6: Final answer
   x = 63,960.03