Finding the Fourth Proportional to 91,512, 137,285.28 and 42,264

Step by Step Solution

1. Step 1: Write the proportion equation
   91,512 : 137,285.28 = 42,264 : x
2. Step 2: Convert to fraction form
   91,512/137,285.28 = 42,264/x
3. Step 3: Cross multiply
   91,512x = 137,285.28 × 42,264
4. Step 4: Simplify right side
   91,512x = 5,802,225,073.92
5. Step 5: Solve for x
   x = 5,802,225,073.92/91,512
6. Step 6: Final answer
   x = 63,403.98