Finding the Fourth Proportional to 355,840.71, 533,762.01 and 131,103.78

Step by Step Solution

1. Step 1: Write the proportion equation
   355,840.71 : 533,762.01 = 131,103.78 : x
2. Step 2: Convert to fraction form
   355,840.71/533,762.01 = 131,103.78/x
3. Step 3: Cross multiply
   355,840.71x = 533,762.01 × 131,103.78
4. Step 4: Simplify right side
   355,840.71x = 69,978,217,131.40
5. Step 5: Solve for x
   x = 69,978,217,131.40/355,840.71
6. Step 6: Final answer
   x = 196,656.02