Finding the Fourth Proportional to 89,837.10, 123,881.40 and 62,644.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,837.10 : 123,881.40 = 62,644.79 : x
2. Step 2: Convert to fraction form
   89,837.10/123,881.40 = 62,644.79/x
3. Step 3: Cross multiply
   89,837.10x = 123,881.40 × 62,644.79
4. Step 4: Simplify right side
   89,837.10x = 7,760,524,597.61
5. Step 5: Solve for x
   x = 7,760,524,597.61/89,837.10
6. Step 6: Final answer
   x = 86,384.41