Finding the Fourth Proportional to 78,490.98, 108,279.48 and 46,637.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,490.98 : 108,279.48 = 46,637.33 : x
2. Step 2: Convert to fraction form
   78,490.98/108,279.48 = 46,637.33/x
3. Step 3: Cross multiply
   78,490.98x = 108,279.48 × 46,637.33
4. Step 4: Simplify right side
   78,490.98x = 5,049,865,474.48
5. Step 5: Solve for x
   x = 5,049,865,474.48/78,490.98
6. Step 6: Final answer
   x = 64,336.89