Finding the Fourth Proportional to 76,397.67, 105,426.76 and 42,406.06

Step by Step Solution

1. Step 1: Write the proportion equation
   76,397.67 : 105,426.76 = 42,406.06 : x
2. Step 2: Convert to fraction form
   76,397.67/105,426.76 = 42,406.06/x
3. Step 3: Cross multiply
   76,397.67x = 105,426.76 × 42,406.06
4. Step 4: Simplify right side
   76,397.67x = 4,470,733,510.17
5. Step 5: Solve for x
   x = 4,470,733,510.17/76,397.67
6. Step 6: Final answer
   x = 58,519.24