Finding the Fourth Proportional to 65,337.42, 90,151.90 and 42,709.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,337.42 : 90,151.90 = 42,709.72 : x
2. Step 2: Convert to fraction form
   65,337.42/90,151.90 = 42,709.72/x
3. Step 3: Cross multiply
   65,337.42x = 90,151.90 × 42,709.72
4. Step 4: Simplify right side
   65,337.42x = 3,850,362,176.63
5. Step 5: Solve for x
   x = 3,850,362,176.63/65,337.42
6. Step 6: Final answer
   x = 58,930.43