Finding the Fourth Proportional to 628,685.31, 943,018.77 and 155,370.72

Step by Step Solution

1. Step 1: Write the proportion equation
   628,685.31 : 943,018.77 = 155,370.72 : x
2. Step 2: Convert to fraction form
   628,685.31/943,018.77 = 155,370.72/x
3. Step 3: Cross multiply
   628,685.31x = 943,018.77 × 155,370.72
4. Step 4: Simplify right side
   628,685.31x = 146,517,505,268.41
5. Step 5: Solve for x
   x = 146,517,505,268.41/628,685.31
6. Step 6: Final answer
   x = 233,053.81