Finding the Fourth Proportional to 76,704.72, 105,842.75 and 42,706.59

Step by Step Solution

1. Step 1: Write the proportion equation
   76,704.72 : 105,842.75 = 42,706.59 : x
2. Step 2: Convert to fraction form
   76,704.72/105,842.75 = 42,706.59/x
3. Step 3: Cross multiply
   76,704.72x = 105,842.75 × 42,706.59
4. Step 4: Simplify right side
   76,704.72x = 4,520,182,715.19
5. Step 5: Solve for x
   x = 4,520,182,715.19/76,704.72
6. Step 6: Final answer
   x = 58,929.66