Finding the Fourth Proportional to 139,561.08, 209,764.56 and 92,337.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,561.08 : 209,764.56 = 92,337.24 : x
2. Step 2: Convert to fraction form
   139,561.08/209,764.56 = 92,337.24/x
3. Step 3: Cross multiply
   139,561.08x = 209,764.56 × 92,337.24
4. Step 4: Simplify right side
   139,561.08x = 19,369,080,520.21
5. Step 5: Solve for x
   x = 19,369,080,520.21/139,561.08
6. Step 6: Final answer
   x = 138,785.69