Finding the Fourth Proportional to 76,834.71, 106,029.28 and 42,380.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,834.71 : 106,029.28 = 42,380.81 : x
2. Step 2: Convert to fraction form
   76,834.71/106,029.28 = 42,380.81/x
3. Step 3: Cross multiply
   76,834.71x = 106,029.28 × 42,380.81
4. Step 4: Simplify right side
   76,834.71x = 4,493,606,690.56
5. Step 5: Solve for x
   x = 4,493,606,690.56/76,834.71
6. Step 6: Final answer
   x = 58,484.07