Finding the Fourth Proportional to 76,590.56, 105,643.04 and 49,685.00

Step by Step Solution

1. Step 1: Write the proportion equation
   76,590.56 : 105,643.04 = 49,685.00 : x
2. Step 2: Convert to fraction form
   76,590.56/105,643.04 = 49,685.00/x
3. Step 3: Cross multiply
   76,590.56x = 105,643.04 × 49,685.00
4. Step 4: Simplify right side
   76,590.56x = 5,248,873,665.76
5. Step 5: Solve for x
   x = 5,248,873,665.76/76,590.56
6. Step 6: Final answer
   x = 68,531.60