Finding the Fourth Proportional to 76,320.24, 105,321.96 and 42,333.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,320.24 : 105,321.96 = 42,333.96 : x
2. Step 2: Convert to fraction form
   76,320.24/105,321.96 = 42,333.96/x
3. Step 3: Cross multiply
   76,320.24x = 105,321.96 × 42,333.96
4. Step 4: Simplify right side
   76,320.24x = 4,458,695,641.76
5. Step 5: Solve for x
   x = 4,458,695,641.76/76,320.24
6. Step 6: Final answer
   x = 58,420.88