Finding the Fourth Proportional to 139,446.31, 192,435.82 and 75,784.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,446.31 : 192,435.82 = 75,784.12 : x
2. Step 2: Convert to fraction form
   139,446.31/192,435.82 = 75,784.12/x
3. Step 3: Cross multiply
   139,446.31x = 192,435.82 × 75,784.12
4. Step 4: Simplify right side
   139,446.31x = 14,583,579,275.18
5. Step 5: Solve for x
   x = 14,583,579,275.18/139,446.31
6. Step 6: Final answer
   x = 104,582.04