Finding the Fourth Proportional to 537,131.58, 805,697.56 and 137,772.32

Step by Step Solution

1. Step 1: Write the proportion equation
   537,131.58 : 805,697.56 = 137,772.32 : x
2. Step 2: Convert to fraction form
   537,131.58/805,697.56 = 137,772.32/x
3. Step 3: Cross multiply
   537,131.58x = 805,697.56 × 137,772.32
4. Step 4: Simplify right side
   537,131.58x = 111,002,822,059.54
5. Step 5: Solve for x
   x = 111,002,822,059.54/537,131.58
6. Step 6: Final answer
   x = 206,658.53