Finding the Fourth Proportional to 67,072.86, 100,624.86 and 19,686.06

Step by Step Solution

1. Step 1: Write the proportion equation
   67,072.86 : 100,624.86 = 19,686.06 : x
2. Step 2: Convert to fraction form
   67,072.86/100,624.86 = 19,686.06/x
3. Step 3: Cross multiply
   67,072.86x = 100,624.86 × 19,686.06
4. Step 4: Simplify right side
   67,072.86x = 1,980,907,031.45
5. Step 5: Solve for x
   x = 1,980,907,031.45/67,072.86
6. Step 6: Final answer
   x = 29,533.66