Finding the Fourth Proportional to 154,082.47, 212,629.72 and 86,100.00

Step by Step Solution

1. Step 1: Write the proportion equation
   154,082.47 : 212,629.72 = 86,100.00 : x
2. Step 2: Convert to fraction form
   154,082.47/212,629.72 = 86,100.00/x
3. Step 3: Cross multiply
   154,082.47x = 212,629.72 × 86,100.00
4. Step 4: Simplify right side
   154,082.47x = 18,307,418,343.52
5. Step 5: Solve for x
   x = 18,307,418,343.52/154,082.47
6. Step 6: Final answer
   x = 118,815.72