Finding the Fourth Proportional to 65,498.78, 90,383.46 and 37,199

Step by Step Solution

1. Step 1: Write the proportion equation
   65,498.78 : 90,383.46 = 37,199 : x
2. Step 2: Convert to fraction form
   65,498.78/90,383.46 = 37,199/x
3. Step 3: Cross multiply
   65,498.78x = 90,383.46 × 37,199
4. Step 4: Simplify right side
   65,498.78x = 3,362,174,328.54
5. Step 5: Solve for x
   x = 3,362,174,328.54/65,498.78
6. Step 6: Final answer
   x = 51,331.86