Finding the Fourth Proportional to 76,797.62, 105,981.24 and 42,808.29

Step by Step Solution

1. Step 1: Write the proportion equation
   76,797.62 : 105,981.24 = 42,808.29 : x
2. Step 2: Convert to fraction form
   76,797.62/105,981.24 = 42,808.29/x
3. Step 3: Cross multiply
   76,797.62x = 105,981.24 × 42,808.29
4. Step 4: Simplify right side
   76,797.62x = 4,536,875,419.58
5. Step 5: Solve for x
   x = 4,536,875,419.58/76,797.62
6. Step 6: Final answer
   x = 59,075.73