Finding the Fourth Proportional to 138,604.47, 191,100.87 and 115,667.34

Step by Step Solution

1. Step 1: Write the proportion equation
   138,604.47 : 191,100.87 = 115,667.34 : x
2. Step 2: Convert to fraction form
   138,604.47/191,100.87 = 115,667.34/x
3. Step 3: Cross multiply
   138,604.47x = 191,100.87 × 115,667.34
4. Step 4: Simplify right side
   138,604.47x = 22,104,129,662.90
5. Step 5: Solve for x
   x = 22,104,129,662.90/138,604.47
6. Step 6: Final answer
   x = 159,476.32