Finding the Fourth Proportional to 65,248.42, 90,038.56 and 38,385.74

Step by Step Solution

1. Step 1: Write the proportion equation
   65,248.42 : 90,038.56 = 38,385.74 : x
2. Step 2: Convert to fraction form
   65,248.42/90,038.56 = 38,385.74/x
3. Step 3: Cross multiply
   65,248.42x = 90,038.56 × 38,385.74
4. Step 4: Simplify right side
   65,248.42x = 3,456,196,999.89
5. Step 5: Solve for x
   x = 3,456,196,999.89/65,248.42
6. Step 6: Final answer
   x = 52,969.82