Finding the Fourth Proportional to 64,972.23, 89,663.15 and 38,134.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,972.23 : 89,663.15 = 38,134.09 : x
2. Step 2: Convert to fraction form
   64,972.23/89,663.15 = 38,134.09/x
3. Step 3: Cross multiply
   64,972.23x = 89,663.15 × 38,134.09
4. Step 4: Simplify right side
   64,972.23x = 3,419,222,631.78
5. Step 5: Solve for x
   x = 3,419,222,631.78/64,972.23
6. Step 6: Final answer
   x = 52,625.91