Finding the Fourth Proportional to 89,565.76, 134,144.40 and 42,851.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,565.76 : 134,144.40 = 42,851.68 : x
2. Step 2: Convert to fraction form
   89,565.76/134,144.40 = 42,851.68/x
3. Step 3: Cross multiply
   89,565.76x = 134,144.40 × 42,851.68
4. Step 4: Simplify right side
   89,565.76x = 5,748,312,902.59
5. Step 5: Solve for x
   x = 5,748,312,902.59/89,565.76
6. Step 6: Final answer
   x = 64,179.80