Finding the Fourth Proportional to 155,191.83, 214,157.82 and 90,667.05

Step by Step Solution

1. Step 1: Write the proportion equation
   155,191.83 : 214,157.82 = 90,667.05 : x
2. Step 2: Convert to fraction form
   155,191.83/214,157.82 = 90,667.05/x
3. Step 3: Cross multiply
   155,191.83x = 214,157.82 × 90,667.05
4. Step 4: Simplify right side
   155,191.83x = 19,417,057,773.83
5. Step 5: Solve for x
   x = 19,417,057,773.83/155,191.83
6. Step 6: Final answer
   x = 125,116.49