Finding the Fourth Proportional to 76,113.99, 105,035.15 and 42,123.90

Step by Step Solution

1. Step 1: Write the proportion equation
   76,113.99 : 105,035.15 = 42,123.90 : x
2. Step 2: Convert to fraction form
   76,113.99/105,035.15 = 42,123.90/x
3. Step 3: Cross multiply
   76,113.99x = 105,035.15 × 42,123.90
4. Step 4: Simplify right side
   76,113.99x = 4,424,489,944.47
5. Step 5: Solve for x
   x = 4,424,489,944.47/76,113.99
6. Step 6: Final answer
   x = 58,129.79