Finding the Fourth Proportional to 65,298.48, 90,111.06 and 38,442.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,298.48 : 90,111.06 = 38,442.12 : x
2. Step 2: Convert to fraction form
   65,298.48/90,111.06 = 38,442.12/x
3. Step 3: Cross multiply
   65,298.48x = 90,111.06 × 38,442.12
4. Step 4: Simplify right side
   65,298.48x = 3,464,060,181.85
5. Step 5: Solve for x
   x = 3,464,060,181.85/65,298.48
6. Step 6: Final answer
   x = 53,049.63