Finding the Fourth Proportional to 89,349.55, 123,286.57 and 59,123.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,349.55 : 123,286.57 = 59,123.86 : x
2. Step 2: Convert to fraction form
   89,349.55/123,286.57 = 59,123.86/x
3. Step 3: Cross multiply
   89,349.55x = 123,286.57 × 59,123.86
4. Step 4: Simplify right side
   89,349.55x = 7,289,177,448.53
5. Step 5: Solve for x
   x = 7,289,177,448.53/89,349.55
6. Step 6: Final answer
   x = 81,580.46