Finding the Fourth Proportional to 76,113.06, 105,033.44 and 42,123

Step by Step Solution

1. Step 1: Write the proportion equation
   76,113.06 : 105,033.44 = 42,123 : x
2. Step 2: Convert to fraction form
   76,113.06/105,033.44 = 42,123/x
3. Step 3: Cross multiply
   76,113.06x = 105,033.44 × 42,123
4. Step 4: Simplify right side
   76,113.06x = 4,424,323,593.12
5. Step 5: Solve for x
   x = 4,424,323,593.12/76,113.06
6. Step 6: Final answer
   x = 58,128.31