Finding the Fourth Proportional to 371,507.89, 557,266.98 and 105,268.15

Step by Step Solution

1. Step 1: Write the proportion equation
   371,507.89 : 557,266.98 = 105,268.15 : x
2. Step 2: Convert to fraction form
   371,507.89/557,266.98 = 105,268.15/x
3. Step 3: Cross multiply
   371,507.89x = 557,266.98 × 105,268.15
4. Step 4: Simplify right side
   371,507.89x = 58,662,464,040.69
5. Step 5: Solve for x
   x = 58,662,464,040.69/371,507.89
6. Step 6: Final answer
   x = 157,903.68