Finding the Fourth Proportional to 117,667.52, 176,278.56 and 91,242.56

Step by Step Solution

1. Step 1: Write the proportion equation
   117,667.52 : 176,278.56 = 91,242.56 : x
2. Step 2: Convert to fraction form
   117,667.52/176,278.56 = 91,242.56/x
3. Step 3: Cross multiply
   117,667.52x = 176,278.56 × 91,242.56
4. Step 4: Simplify right side
   117,667.52x = 16,084,107,087.51
5. Step 5: Solve for x
   x = 16,084,107,087.51/117,667.52
6. Step 6: Final answer
   x = 136,691.14