Finding the Fourth Proportional to 89,410.79, 123,441.08 and 59,221.99

Step by Step Solution

1. Step 1: Write the proportion equation
   89,410.79 : 123,441.08 = 59,221.99 : x
2. Step 2: Convert to fraction form
   89,410.79/123,441.08 = 59,221.99/x
3. Step 3: Cross multiply
   89,410.79x = 123,441.08 × 59,221.99
4. Step 4: Simplify right side
   89,410.79x = 7,310,426,405.35
5. Step 5: Solve for x
   x = 7,310,426,405.35/89,410.79
6. Step 6: Final answer
   x = 81,762.24