Finding the Fourth Proportional to 65,142.63, 89,892.99 and 42,524.19

Step by Step Solution

1. Step 1: Write the proportion equation
   65,142.63 : 89,892.99 = 42,524.19 : x
2. Step 2: Convert to fraction form
   65,142.63/89,892.99 = 42,524.19/x
3. Step 3: Cross multiply
   65,142.63x = 89,892.99 × 42,524.19
4. Step 4: Simplify right side
   65,142.63x = 3,822,626,586.43
5. Step 5: Solve for x
   x = 3,822,626,586.43/65,142.63
6. Step 6: Final answer
   x = 58,680.88