Finding the Fourth Proportional to 76,065.15, 104,967.90 and 42,072.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,065.15 : 104,967.90 = 42,072.69 : x
2. Step 2: Convert to fraction form
   76,065.15/104,967.90 = 42,072.69/x
3. Step 3: Cross multiply
   76,065.15x = 104,967.90 × 42,072.69
4. Step 4: Simplify right side
   76,065.15x = 4,416,281,916.65
5. Step 5: Solve for x
   x = 4,416,281,916.65/76,065.15
6. Step 6: Final answer
   x = 58,059.20