Finding the Fourth Proportional to 76,769.88, 105,942.18 and 42,779.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,769.88 : 105,942.18 = 42,779.82 : x
2. Step 2: Convert to fraction form
   76,769.88/105,942.18 = 42,779.82/x
3. Step 3: Cross multiply
   76,769.88x = 105,942.18 × 42,779.82
4. Step 4: Simplify right side
   76,769.88x = 4,532,187,390.81
5. Step 5: Solve for x
   x = 4,532,187,390.81/76,769.88
6. Step 6: Final answer
   x = 59,036.01