Finding the Fourth Proportional to 35,838.40, 49,326.42 and 31,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,838.40 : 49,326.42 = 31,561.50 : x
2. Step 2: Convert to fraction form
   35,838.40/49,326.42 = 31,561.50/x
3. Step 3: Cross multiply
   35,838.40x = 49,326.42 × 31,561.50
4. Step 4: Simplify right side
   35,838.40x = 1,556,815,804.83
5. Step 5: Solve for x
   x = 1,556,815,804.83/35,838.40
6. Step 6: Final answer
   x = 43,439.88