Finding the Fourth Proportional to 90,288.54, 135,409.73 and 37,018.08

Step by Step Solution

1. Step 1: Write the proportion equation
   90,288.54 : 135,409.73 = 37,018.08 : x
2. Step 2: Convert to fraction form
   90,288.54/135,409.73 = 37,018.08/x
3. Step 3: Cross multiply
   90,288.54x = 135,409.73 × 37,018.08
4. Step 4: Simplify right side
   90,288.54x = 5,012,608,032.83
5. Step 5: Solve for x
   x = 5,012,608,032.83/90,288.54
6. Step 6: Final answer
   x = 55,517.66