Finding the Fourth Proportional to 76,301.99, 105,297.98 and 42,311.91

Step by Step Solution

1. Step 1: Write the proportion equation
   76,301.99 : 105,297.98 = 42,311.91 : x
2. Step 2: Convert to fraction form
   76,301.99/105,297.98 = 42,311.91/x
3. Step 3: Cross multiply
   76,301.99x = 105,297.98 × 42,311.91
4. Step 4: Simplify right side
   76,301.99x = 4,455,358,441.38
5. Step 5: Solve for x
   x = 4,455,358,441.38/76,301.99
6. Step 6: Final answer
   x = 58,391.12