Finding the Fourth Proportional to 76,685.56, 105,824.01 and 42,694.07

Step by Step Solution

1. Step 1: Write the proportion equation
   76,685.56 : 105,824.01 = 42,694.07 : x
2. Step 2: Convert to fraction form
   76,685.56/105,824.01 = 42,694.07/x
3. Step 3: Cross multiply
   76,685.56x = 105,824.01 × 42,694.07
4. Step 4: Simplify right side
   76,685.56x = 4,518,057,161.50
5. Step 5: Solve for x
   x = 4,518,057,161.50/76,685.56
6. Step 6: Final answer
   x = 58,916.66