Finding the Fourth Proportional to 89,601.80, 123,598.98 and 56,009.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89,601.80 : 123,598.98 = 56,009.48 : x
2. Step 2: Convert to fraction form
   89,601.80/123,598.98 = 56,009.48/x
3. Step 3: Cross multiply
   89,601.80x = 123,598.98 × 56,009.48
4. Step 4: Simplify right side
   89,601.80x = 6,922,713,980.34
5. Step 5: Solve for x
   x = 6,922,713,980.34/89,601.80
6. Step 6: Final answer
   x = 77,260.89