Finding the Fourth Proportional to 89,400.78, 123,374.38 and 48,565.67

Step by Step Solution

1. Step 1: Write the proportion equation
   89,400.78 : 123,374.38 = 48,565.67 : x
2. Step 2: Convert to fraction form
   89,400.78/123,374.38 = 48,565.67/x
3. Step 3: Cross multiply
   89,400.78x = 123,374.38 × 48,565.67
4. Step 4: Simplify right side
   89,400.78x = 5,991,759,238.51
5. Step 5: Solve for x
   x = 5,991,759,238.51/89,400.78
6. Step 6: Final answer
   x = 67,021.33