Finding the Fourth Proportional to 89,595.79, 123,590.76 and 56,003.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89,595.79 : 123,590.76 = 56,003.47 : x
2. Step 2: Convert to fraction form
   89,595.79/123,590.76 = 56,003.47/x
3. Step 3: Cross multiply
   89,595.79x = 123,590.76 × 56,003.47
4. Step 4: Simplify right side
   89,595.79x = 6,921,511,419.94
5. Step 5: Solve for x
   x = 6,921,511,419.94/89,595.79
6. Step 6: Final answer
   x = 77,252.64