Finding the Fourth Proportional to 76,792.40, 105,974.01 and 42,803.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,792.40 : 105,974.01 = 42,803.05 : x
2. Step 2: Convert to fraction form
   76,792.40/105,974.01 = 42,803.05/x
3. Step 3: Cross multiply
   76,792.40x = 105,974.01 × 42,803.05
4. Step 4: Simplify right side
   76,792.40x = 4,536,010,583.80
5. Step 5: Solve for x
   x = 4,536,010,583.80/76,792.40
6. Step 6: Final answer
   x = 59,068.48