Finding the Fourth Proportional to 49,109.39, 67,779.18 and 28,971.27

Step by Step Solution

1. Step 1: Write the proportion equation
   49,109.39 : 67,779.18 = 28,971.27 : x
2. Step 2: Convert to fraction form
   49,109.39/67,779.18 = 28,971.27/x
3. Step 3: Cross multiply
   49,109.39x = 67,779.18 × 28,971.27
4. Step 4: Simplify right side
   49,109.39x = 1,963,648,924.16
5. Step 5: Solve for x
   x = 1,963,648,924.16/49,109.39
6. Step 6: Final answer
   x = 39,985.20