Finding the Fourth Proportional to 139,322.31, 192,146.36 and 93,993.09

Step by Step Solution

1. Step 1: Write the proportion equation
   139,322.31 : 192,146.36 = 93,993.09 : x
2. Step 2: Convert to fraction form
   139,322.31/192,146.36 = 93,993.09/x
3. Step 3: Cross multiply
   139,322.31x = 192,146.36 × 93,993.09
4. Step 4: Simplify right side
   139,322.31x = 18,060,429,638.69
5. Step 5: Solve for x
   x = 18,060,429,638.69/139,322.31
6. Step 6: Final answer
   x = 129,630.56