Finding the Fourth Proportional to 139,580.46, 192,559.25 and 85,833.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,580.46 : 192,559.25 = 85,833.72 : x
2. Step 2: Convert to fraction form
   139,580.46/192,559.25 = 85,833.72/x
3. Step 3: Cross multiply
   139,580.46x = 192,559.25 × 85,833.72
4. Step 4: Simplify right side
   139,580.46x = 16,528,076,318.74
5. Step 5: Solve for x
   x = 16,528,076,318.74/139,580.46
6. Step 6: Final answer
   x = 118,412.54