Finding the Fourth Proportional to 1,242,123.68, 1,714,017.57 and 718,743.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,123.68 : 1,714,017.57 = 718,743.83 : x
2. Step 2: Convert to fraction form
   1,242,123.68/1,714,017.57 = 718,743.83/x
3. Step 3: Cross multiply
   1,242,123.68x = 1,714,017.57 × 718,743.83
4. Step 4: Simplify right side
   1,242,123.68x = 1,231,939,552,949.09
5. Step 5: Solve for x
   x = 1,231,939,552,949.09/1,242,123.68
6. Step 6: Final answer
   x = 991,801.04