Finding the Fourth Proportional to 76,768.52, 105,938.96 and 42,776.87

Step by Step Solution

1. Step 1: Write the proportion equation
   76,768.52 : 105,938.96 = 42,776.87 : x
2. Step 2: Convert to fraction form
   76,768.52/105,938.96 = 42,776.87/x
3. Step 3: Cross multiply
   76,768.52x = 105,938.96 × 42,776.87
4. Step 4: Simplify right side
   76,768.52x = 4,531,736,376.28
5. Step 5: Solve for x
   x = 4,531,736,376.28/76,768.52
6. Step 6: Final answer
   x = 59,031.18