Finding the Fourth Proportional to 64,890.48, 89,540.73 and 38,026.83

Step by Step Solution

1. Step 1: Write the proportion equation
   64,890.48 : 89,540.73 = 38,026.83 : x
2. Step 2: Convert to fraction form
   64,890.48/89,540.73 = 38,026.83/x
3. Step 3: Cross multiply
   64,890.48x = 89,540.73 × 38,026.83
4. Step 4: Simplify right side
   64,890.48x = 3,404,950,117.79
5. Step 5: Solve for x
   x = 3,404,950,117.79/64,890.48
6. Step 6: Final answer
   x = 52,472.26