Finding the Fourth Proportional to 88,978, 122,788.72 and 50,743.78

Step by Step Solution

1. Step 1: Write the proportion equation
   88,978 : 122,788.72 = 50,743.78 : x
2. Step 2: Convert to fraction form
   88,978/122,788.72 = 50,743.78/x
3. Step 3: Cross multiply
   88,978x = 122,788.72 × 50,743.78
4. Step 4: Simplify right side
   88,978x = 6,230,762,926.50
5. Step 5: Solve for x
   x = 6,230,762,926.50/88,978
6. Step 6: Final answer
   x = 70,025.88