Finding the Fourth Proportional to 86,300.64, 129,447.72 and 35,698.32

Step by Step Solution

1. Step 1: Write the proportion equation
   86,300.64 : 129,447.72 = 35,698.32 : x
2. Step 2: Convert to fraction form
   86,300.64/129,447.72 = 35,698.32/x
3. Step 3: Cross multiply
   86,300.64x = 129,447.72 × 35,698.32
4. Step 4: Simplify right side
   86,300.64x = 4,621,066,131.83
5. Step 5: Solve for x
   x = 4,621,066,131.83/86,300.64
6. Step 6: Final answer
   x = 53,546.14