Finding the Fourth Proportional to 172,994.00, 238,719.86 and 100,398.99

Step by Step Solution

1. Step 1: Write the proportion equation
   172,994.00 : 238,719.86 = 100,398.99 : x
2. Step 2: Convert to fraction form
   172,994.00/238,719.86 = 100,398.99/x
3. Step 3: Cross multiply
   172,994.00x = 238,719.86 × 100,398.99
4. Step 4: Simplify right side
   172,994.00x = 23,967,233,606.64
5. Step 5: Solve for x
   x = 23,967,233,606.64/172,994.00
6. Step 6: Final answer
   x = 138,543.73