Finding the Fourth Proportional to 76,422.08, 105,450.72 and 42,881.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,422.08 : 105,450.72 = 42,881.60 : x
2. Step 2: Convert to fraction form
   76,422.08/105,450.72 = 42,881.60/x
3. Step 3: Cross multiply
   76,422.08x = 105,450.72 × 42,881.60
4. Step 4: Simplify right side
   76,422.08x = 4,521,895,594.75
5. Step 5: Solve for x
   x = 4,521,895,594.75/76,422.08
6. Step 6: Final answer
   x = 59,170.01