Finding the Fourth Proportional to 155,154.89, 214,087.86 and 91,505.30

Step by Step Solution

1. Step 1: Write the proportion equation
   155,154.89 : 214,087.86 = 91,505.30 : x
2. Step 2: Convert to fraction form
   155,154.89/214,087.86 = 91,505.30/x
3. Step 3: Cross multiply
   155,154.89x = 214,087.86 × 91,505.30
4. Step 4: Simplify right side
   155,154.89x = 19,590,172,785.22
5. Step 5: Solve for x
   x = 19,590,172,785.22/155,154.89
6. Step 6: Final answer
   x = 126,262.04