Finding the Fourth Proportional to 245,623.05, 338,956.34 and 138,192.83

Step by Step Solution

1. Step 1: Write the proportion equation
   245,623.05 : 338,956.34 = 138,192.83 : x
2. Step 2: Convert to fraction form
   245,623.05/338,956.34 = 138,192.83/x
3. Step 3: Cross multiply
   245,623.05x = 338,956.34 × 138,192.83
4. Step 4: Simplify right side
   245,623.05x = 46,841,333,485.30
5. Step 5: Solve for x
   x = 46,841,333,485.30/245,623.05
6. Step 6: Final answer
   x = 190,704.14