Finding the Fourth Proportional to 236,498.22, 354,536.37 and 86,703.53

Step by Step Solution

1. Step 1: Write the proportion equation
   236,498.22 : 354,536.37 = 86,703.53 : x
2. Step 2: Convert to fraction form
   236,498.22/354,536.37 = 86,703.53/x
3. Step 3: Cross multiply
   236,498.22x = 354,536.37 × 86,703.53
4. Step 4: Simplify right side
   236,498.22x = 30,739,553,019.70
5. Step 5: Solve for x
   x = 30,739,553,019.70/236,498.22
6. Step 6: Final answer
   x = 129,977.95