Finding the Fourth Proportional to 45,779.43, 68,613.69 and 19,428.83

Step by Step Solution

1. Step 1: Write the proportion equation
   45,779.43 : 68,613.69 = 19,428.83 : x
2. Step 2: Convert to fraction form
   45,779.43/68,613.69 = 19,428.83/x
3. Step 3: Cross multiply
   45,779.43x = 68,613.69 × 19,428.83
4. Step 4: Simplify right side
   45,779.43x = 1,333,083,375.61
5. Step 5: Solve for x
   x = 1,333,083,375.61/45,779.43
6. Step 6: Final answer
   x = 29,119.70