Finding the Fourth Proportional to 76,550.62, 105,642.15 and 42,093.57

Step by Step Solution

1. Step 1: Write the proportion equation
   76,550.62 : 105,642.15 = 42,093.57 : x
2. Step 2: Convert to fraction form
   76,550.62/105,642.15 = 42,093.57/x
3. Step 3: Cross multiply
   76,550.62x = 105,642.15 × 42,093.57
4. Step 4: Simplify right side
   76,550.62x = 4,446,855,235.98
5. Step 5: Solve for x
   x = 4,446,855,235.98/76,550.62
6. Step 6: Final answer
   x = 58,090.39