Finding the Fourth Proportional to 64,883.71, 89,539.59 and 38,020.87

Step by Step Solution

1. Step 1: Write the proportion equation
   64,883.71 : 89,539.59 = 38,020.87 : x
2. Step 2: Convert to fraction form
   64,883.71/89,539.59 = 38,020.87/x
3. Step 3: Cross multiply
   64,883.71x = 89,539.59 × 38,020.87
4. Step 4: Simplify right side
   64,883.71x = 3,404,373,111.24
5. Step 5: Solve for x
   x = 3,404,373,111.24/64,883.71
6. Step 6: Final answer
   x = 52,468.84