Finding the Fourth Proportional to 64,881.72, 89,536.84 and 38,018.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,881.72 : 89,536.84 = 38,018.88 : x
2. Step 2: Convert to fraction form
   64,881.72/89,536.84 = 38,018.88/x
3. Step 3: Cross multiply
   64,881.72x = 89,536.84 × 38,018.88
4. Step 4: Simplify right side
   64,881.72x = 3,404,090,375.54
5. Step 5: Solve for x
   x = 3,404,090,375.54/64,881.72
6. Step 6: Final answer
   x = 52,466.09