Finding the Fourth Proportional to 76,746.71, 105,143.38 and 73,870.35

Step by Step Solution

1. Step 1: Write the proportion equation
   76,746.71 : 105,143.38 = 73,870.35 : x
2. Step 2: Convert to fraction form
   76,746.71/105,143.38 = 73,870.35/x
3. Step 3: Cross multiply
   76,746.71x = 105,143.38 × 73,870.35
4. Step 4: Simplify right side
   76,746.71x = 7,766,978,280.78
5. Step 5: Solve for x
   x = 7,766,978,280.78/76,746.71
6. Step 6: Final answer
   x = 101,202.75