Finding the Fourth Proportional to 76,200.58, 105,153.15 and 42,206.77

Step by Step Solution

1. Step 1: Write the proportion equation
   76,200.58 : 105,153.15 = 42,206.77 : x
2. Step 2: Convert to fraction form
   76,200.58/105,153.15 = 42,206.77/x
3. Step 3: Cross multiply
   76,200.58x = 105,153.15 × 42,206.77
4. Step 4: Simplify right side
   76,200.58x = 4,438,174,816.83
5. Step 5: Solve for x
   x = 4,438,174,816.83/76,200.58
6. Step 6: Final answer
   x = 58,243.32