Finding the Fourth Proportional to 64,766.40, 89,416.28 and 46,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,766.40 : 89,416.28 = 46,842.72 : x
2. Step 2: Convert to fraction form
   64,766.40/89,416.28 = 46,842.72/x
3. Step 3: Cross multiply
   64,766.40x = 89,416.28 × 46,842.72
4. Step 4: Simplify right side
   64,766.40x = 4,188,501,767.48
5. Step 5: Solve for x
   x = 4,188,501,767.48/64,766.40
6. Step 6: Final answer
   x = 64,670.91