Finding the Fourth Proportional to 89,316.63, 123,231.69 and 57,503.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89,316.63 : 123,231.69 = 57,503.94 : x
2. Step 2: Convert to fraction form
   89,316.63/123,231.69 = 57,503.94/x
3. Step 3: Cross multiply
   89,316.63x = 123,231.69 × 57,503.94
4. Step 4: Simplify right side
   89,316.63x = 7,086,307,707.86
5. Step 5: Solve for x
   x = 7,086,307,707.86/89,316.63
6. Step 6: Final answer
   x = 79,339.18