Finding the Fourth Proportional to 151,147.35, 208,585.10 and 86,615.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,147.35 : 208,585.10 = 86,615.31 : x
2. Step 2: Convert to fraction form
   151,147.35/208,585.10 = 86,615.31/x
3. Step 3: Cross multiply
   151,147.35x = 208,585.10 × 86,615.31
4. Step 4: Simplify right side
   151,147.35x = 18,066,663,097.88
5. Step 5: Solve for x
   x = 18,066,663,097.88/151,147.35
6. Step 6: Final answer
   x = 119,530.13