Finding the Fourth Proportional to 155,381.59, 214,428.80 and 91,719.38

Step by Step Solution

1. Step 1: Write the proportion equation
   155,381.59 : 214,428.80 = 91,719.38 : x
2. Step 2: Convert to fraction form
   155,381.59/214,428.80 = 91,719.38/x
3. Step 3: Cross multiply
   155,381.59x = 214,428.80 × 91,719.38
4. Step 4: Simplify right side
   155,381.59x = 19,667,277,355.51
5. Step 5: Solve for x
   x = 19,667,277,355.51/155,381.59
6. Step 6: Final answer
   x = 126,574.05