Finding the Fourth Proportional to 46,603.64, 64,292.56 and 31,490.79

Step by Step Solution

1. Step 1: Write the proportion equation
   46,603.64 : 64,292.56 = 31,490.79 : x
2. Step 2: Convert to fraction form
   46,603.64/64,292.56 = 31,490.79/x
3. Step 3: Cross multiply
   46,603.64x = 64,292.56 × 31,490.79
4. Step 4: Simplify right side
   46,603.64x = 2,024,623,547.34
5. Step 5: Solve for x
   x = 2,024,623,547.34/46,603.64
6. Step 6: Final answer
   x = 43,443.46