Finding the Fourth Proportional to 64,794, 89,454.60 and 42,476.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,794 : 89,454.60 = 42,476.88 : x
2. Step 2: Convert to fraction form
   64,794/89,454.60 = 42,476.88/x
3. Step 3: Cross multiply
   64,794x = 89,454.60 × 42,476.88
4. Step 4: Simplify right side
   64,794x = 3,799,752,309.65
5. Step 5: Solve for x
   x = 3,799,752,309.65/64,794
6. Step 6: Final answer
   x = 58,643.58