Finding the Fourth Proportional to 315,395.69, 473,165.96 and 90,757.98

Step by Step Solution

1. Step 1: Write the proportion equation
   315,395.69 : 473,165.96 = 90,757.98 : x
2. Step 2: Convert to fraction form
   315,395.69/473,165.96 = 90,757.98/x
3. Step 3: Cross multiply
   315,395.69x = 473,165.96 × 90,757.98
4. Step 4: Simplify right side
   315,395.69x = 42,943,586,280.57
5. Step 5: Solve for x
   x = 42,943,586,280.57/315,395.69
6. Step 6: Final answer
   x = 136,157.81