Finding the Fourth Proportional to 78,691.56, 108,594.82 and 46,861.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,691.56 : 108,594.82 = 46,861.80 : x
2. Step 2: Convert to fraction form
   78,691.56/108,594.82 = 46,861.80/x
3. Step 3: Cross multiply
   78,691.56x = 108,594.82 × 46,861.80
4. Step 4: Simplify right side
   78,691.56x = 5,088,948,735.88
5. Step 5: Solve for x
   x = 5,088,948,735.88/78,691.56
6. Step 6: Final answer
   x = 64,669.56