Finding the Fourth Proportional to 76,395.17, 105,423.32 and 42,403.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,395.17 : 105,423.32 = 42,403.56 : x
2. Step 2: Convert to fraction form
   76,395.17/105,423.32 = 42,403.56/x
3. Step 3: Cross multiply
   76,395.17x = 105,423.32 × 42,403.56
4. Step 4: Simplify right side
   76,395.17x = 4,470,323,863.00
5. Step 5: Solve for x
   x = 4,470,323,863.00/76,395.17
6. Step 6: Final answer
   x = 58,515.80