Finding the Fourth Proportional to 89,440.59, 123,297.99 and 62,499.45

Step by Step Solution

1. Step 1: Write the proportion equation
   89,440.59 : 123,297.99 = 62,499.45 : x
2. Step 2: Convert to fraction form
   89,440.59/123,297.99 = 62,499.45/x
3. Step 3: Cross multiply
   89,440.59x = 123,297.99 × 62,499.45
4. Step 4: Simplify right side
   89,440.59x = 7,706,056,561.11
5. Step 5: Solve for x
   x = 7,706,056,561.11/89,440.59
6. Step 6: Final answer
   x = 86,158.38