Finding the Fourth Proportional to 470,922.53, 706,383.59 and 138,498.53

Step by Step Solution

1. Step 1: Write the proportion equation
   470,922.53 : 706,383.59 = 138,498.53 : x
2. Step 2: Convert to fraction form
   470,922.53/706,383.59 = 138,498.53/x
3. Step 3: Cross multiply
   470,922.53x = 706,383.59 × 138,498.53
4. Step 4: Simplify right side
   470,922.53x = 97,833,084,606.71
5. Step 5: Solve for x
   x = 97,833,084,606.71/470,922.53
6. Step 6: Final answer
   x = 207,747.73