Finding the Fourth Proportional to 90,843.99, 136,266.59 and 31,679.43

Step by Step Solution

1. Step 1: Write the proportion equation
   90,843.99 : 136,266.59 = 31,679.43 : x
2. Step 2: Convert to fraction form
   90,843.99/136,266.59 = 31,679.43/x
3. Step 3: Cross multiply
   90,843.99x = 136,266.59 × 31,679.43
4. Step 4: Simplify right side
   90,843.99x = 4,316,847,059.51
5. Step 5: Solve for x
   x = 4,316,847,059.51/90,843.99
6. Step 6: Final answer
   x = 47,519.35