Finding the Fourth Proportional to 67,068.72, 100,618.62 and 19,681.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67,068.72 : 100,618.62 = 19,681.89 : x
2. Step 2: Convert to fraction form
   67,068.72/100,618.62 = 19,681.89/x
3. Step 3: Cross multiply
   67,068.72x = 100,618.62 × 19,681.89
4. Step 4: Simplify right side
   67,068.72x = 1,980,364,610.79
5. Step 5: Solve for x
   x = 1,980,364,610.79/67,068.72
6. Step 6: Final answer
   x = 29,527.40