Finding the Fourth Proportional to 76,870.65, 106,081.62 and 42,881.34

Step by Step Solution

1. Step 1: Write the proportion equation
   76,870.65 : 106,081.62 = 42,881.34 : x
2. Step 2: Convert to fraction form
   76,870.65/106,081.62 = 42,881.34/x
3. Step 3: Cross multiply
   76,870.65x = 106,081.62 × 42,881.34
4. Step 4: Simplify right side
   76,870.65x = 4,548,922,014.97
5. Step 5: Solve for x
   x = 4,548,922,014.97/76,870.65
6. Step 6: Final answer
   x = 59,176.32