Finding the Fourth Proportional to 76,519.38, 105,596.65 and 42,526.79

Step by Step Solution

1. Step 1: Write the proportion equation
   76,519.38 : 105,596.65 = 42,526.79 : x
2. Step 2: Convert to fraction form
   76,519.38/105,596.65 = 42,526.79/x
3. Step 3: Cross multiply
   76,519.38x = 105,596.65 × 42,526.79
4. Step 4: Simplify right side
   76,519.38x = 4,490,686,559.25
5. Step 5: Solve for x
   x = 4,490,686,559.25/76,519.38
6. Step 6: Final answer
   x = 58,686.92