Finding the Fourth Proportional to 89,499.07, 123,527.59 and 56,772.37

Step by Step Solution

1. Step 1: Write the proportion equation
   89,499.07 : 123,527.59 = 56,772.37 : x
2. Step 2: Convert to fraction form
   89,499.07/123,527.59 = 56,772.37/x
3. Step 3: Cross multiply
   89,499.07x = 123,527.59 × 56,772.37
4. Step 4: Simplify right side
   89,499.07x = 7,012,953,593.94
5. Step 5: Solve for x
   x = 7,012,953,593.94/89,499.07
6. Step 6: Final answer
   x = 78,357.84