Finding the Fourth Proportional to 88,978, 122,789.64 and 48,691.76

Step by Step Solution

1. Step 1: Write the proportion equation
   88,978 : 122,789.64 = 48,691.76 : x
2. Step 2: Convert to fraction form
   88,978/122,789.64 = 48,691.76/x
3. Step 3: Cross multiply
   88,978x = 122,789.64 × 48,691.76
4. Step 4: Simplify right side
   88,978x = 5,978,843,681.37
5. Step 5: Solve for x
   x = 5,978,843,681.37/88,978
6. Step 6: Final answer
   x = 67,194.63