Finding the Fourth Proportional to 76,677.46, 105,812.42 and 42,684.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,677.46 : 105,812.42 = 42,684.84 : x
2. Step 2: Convert to fraction form
   76,677.46/105,812.42 = 42,684.84/x
3. Step 3: Cross multiply
   76,677.46x = 105,812.42 × 42,684.84
4. Step 4: Simplify right side
   76,677.46x = 4,516,586,217.71
5. Step 5: Solve for x
   x = 4,516,586,217.71/76,677.46
6. Step 6: Final answer
   x = 58,903.70