Finding the Fourth Proportional to 137,333.78, 189,550.05 and 83,636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   137,333.78 : 189,550.05 = 83,636.18 : x
2. Step 2: Convert to fraction form
   137,333.78/189,550.05 = 83,636.18/x
3. Step 3: Cross multiply
   137,333.78x = 189,550.05 × 83,636.18
4. Step 4: Simplify right side
   137,333.78x = 15,853,242,100.81
5. Step 5: Solve for x
   x = 15,853,242,100.81/137,333.78
6. Step 6: Final answer
   x = 115,435.85