Finding the Fourth Proportional to 89,422, 133,928.88 and 42,707.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,422 : 133,928.88 = 42,707.68 : x
2. Step 2: Convert to fraction form
   89,422/133,928.88 = 42,707.68/x
3. Step 3: Cross multiply
   89,422x = 133,928.88 × 42,707.68
4. Step 4: Simplify right side
   89,422x = 5,719,791,749.80
5. Step 5: Solve for x
   x = 5,719,791,749.80/89,422
6. Step 6: Final answer
   x = 63,964.03