Finding the Fourth Proportional to 86,434.56, 129,582.72 and 37,221.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,434.56 : 129,582.72 = 37,221.12 : x
2. Step 2: Convert to fraction form
   86,434.56/129,582.72 = 37,221.12/x
3. Step 3: Cross multiply
   86,434.56x = 129,582.72 × 37,221.12
4. Step 4: Simplify right side
   86,434.56x = 4,823,213,971.05
5. Step 5: Solve for x
   x = 4,823,213,971.05/86,434.56
6. Step 6: Final answer
   x = 55,801.92