Finding the Fourth Proportional to 89,748.61, 123,831.33 and 50,977.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,748.61 : 123,831.33 = 50,977.80 : x
2. Step 2: Convert to fraction form
   89,748.61/123,831.33 = 50,977.80/x
3. Step 3: Cross multiply
   89,748.61x = 123,831.33 × 50,977.80
4. Step 4: Simplify right side
   89,748.61x = 6,312,648,583.31
5. Step 5: Solve for x
   x = 6,312,648,583.31/89,748.61
6. Step 6: Final answer
   x = 70,337.01