Finding the Fourth Proportional to 155,404.96, 214,459.68 and 91,774.15

Step by Step Solution

1. Step 1: Write the proportion equation
   155,404.96 : 214,459.68 = 91,774.15 : x
2. Step 2: Convert to fraction form
   155,404.96/214,459.68 = 91,774.15/x
3. Step 3: Cross multiply
   155,404.96x = 214,459.68 × 91,774.15
4. Step 4: Simplify right side
   155,404.96x = 19,681,854,841.27
5. Step 5: Solve for x
   x = 19,681,854,841.27/155,404.96
6. Step 6: Final answer
   x = 126,648.82