Finding the Fourth Proportional to 65,349.44, 90,156.12 and 42,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,349.44 : 90,156.12 = 42,680.72 : x
2. Step 2: Convert to fraction form
   65,349.44/90,156.12 = 42,680.72/x
3. Step 3: Cross multiply
   65,349.44x = 90,156.12 × 42,680.72
4. Step 4: Simplify right side
   65,349.44x = 3,847,928,114.01
5. Step 5: Solve for x
   x = 3,847,928,114.01/65,349.44
6. Step 6: Final answer
   x = 58,882.34