Finding the Fourth Proportional to 137,389.30, 189,597.18 and 83,674.32

Step by Step Solution

1. Step 1: Write the proportion equation
   137,389.30 : 189,597.18 = 83,674.32 : x
2. Step 2: Convert to fraction form
   137,389.30/189,597.18 = 83,674.32/x
3. Step 3: Cross multiply
   137,389.30x = 189,597.18 × 83,674.32
4. Step 4: Simplify right side
   137,389.30x = 15,864,415,377.72
5. Step 5: Solve for x
   x = 15,864,415,377.72/137,389.30
6. Step 6: Final answer
   x = 115,470.53