Finding the Fourth Proportional to 418,962.73, 628,435.59 and 103,422.37

Step by Step Solution

1. Step 1: Write the proportion equation
   418,962.73 : 628,435.59 = 103,422.37 : x
2. Step 2: Convert to fraction form
   418,962.73/628,435.59 = 103,422.37/x
3. Step 3: Cross multiply
   418,962.73x = 628,435.59 × 103,422.37
4. Step 4: Simplify right side
   418,962.73x = 64,994,298,110.15
5. Step 5: Solve for x
   x = 64,994,298,110.15/418,962.73
6. Step 6: Final answer
   x = 155,131.46