Finding the Fourth Proportional to 139,139.37, 192,012.81 and 75,477.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,139.37 : 192,012.81 = 75,477.62 : x
2. Step 2: Convert to fraction form
   139,139.37/192,012.81 = 75,477.62/x
3. Step 3: Cross multiply
   139,139.37x = 192,012.81 × 75,477.62
4. Step 4: Simplify right side
   139,139.37x = 14,492,668,948.25
5. Step 5: Solve for x
   x = 14,492,668,948.25/139,139.37
6. Step 6: Final answer
   x = 104,159.37