Finding the Fourth Proportional to 90,323.10, 135,462.78 and 42,917.14

Step by Step Solution

1. Step 1: Write the proportion equation
   90,323.10 : 135,462.78 = 42,917.14 : x
2. Step 2: Convert to fraction form
   90,323.10/135,462.78 = 42,917.14/x
3. Step 3: Cross multiply
   90,323.10x = 135,462.78 × 42,917.14
4. Step 4: Simplify right side
   90,323.10x = 5,813,675,263.38
5. Step 5: Solve for x
   x = 5,813,675,263.38/90,323.10
6. Step 6: Final answer
   x = 64,365.32