Finding the Fourth Proportional to 65,341.42, 90,157.42 and 42,713.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,341.42 : 90,157.42 = 42,713.72 : x
2. Step 2: Convert to fraction form
   65,341.42/90,157.42 = 42,713.72/x
3. Step 3: Cross multiply
   65,341.42x = 90,157.42 × 42,713.72
4. Step 4: Simplify right side
   65,341.42x = 3,850,958,793.80
5. Step 5: Solve for x
   x = 3,850,958,793.80/65,341.42
6. Step 6: Final answer
   x = 58,935.95