Finding the Fourth Proportional to 139,527.52, 189,971.92 and 139,084.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,527.52 : 189,971.92 = 139,084.64 : x
2. Step 2: Convert to fraction form
   139,527.52/189,971.92 = 139,084.64/x
3. Step 3: Cross multiply
   139,527.52x = 189,971.92 × 139,084.64
4. Step 4: Simplify right side
   139,527.52x = 26,422,176,103.31
5. Step 5: Solve for x
   x = 26,422,176,103.31/139,527.52
6. Step 6: Final answer
   x = 189,368.92