Finding the Fourth Proportional to 78,686.32, 108,587.58 and 46,856.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,686.32 : 108,587.58 = 46,856.56 : x
2. Step 2: Convert to fraction form
   78,686.32/108,587.58 = 46,856.56/x
3. Step 3: Cross multiply
   78,686.32x = 108,587.58 × 46,856.56
4. Step 4: Simplify right side
   78,686.32x = 5,088,040,457.52
5. Step 5: Solve for x
   x = 5,088,040,457.52/78,686.32
6. Step 6: Final answer
   x = 64,662.33