Finding the Fourth Proportional to 76,756.58, 105,916.83 and 42,761.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,756.58 : 105,916.83 = 42,761.60 : x
2. Step 2: Convert to fraction form
   76,756.58/105,916.83 = 42,761.60/x
3. Step 3: Cross multiply
   76,756.58x = 105,916.83 × 42,761.60
4. Step 4: Simplify right side
   76,756.58x = 4,529,172,588.14
5. Step 5: Solve for x
   x = 4,529,172,588.14/76,756.58
6. Step 6: Final answer
   x = 59,006.97