Finding the Fourth Proportional to 155,618.01, 214,300.89 and 135,190.76

Step by Step Solution

1. Step 1: Write the proportion equation
   155,618.01 : 214,300.89 = 135,190.76 : x
2. Step 2: Convert to fraction form
   155,618.01/214,300.89 = 135,190.76/x
3. Step 3: Cross multiply
   155,618.01x = 214,300.89 × 135,190.76
4. Step 4: Simplify right side
   155,618.01x = 28,971,499,116.27
5. Step 5: Solve for x
   x = 28,971,499,116.27/155,618.01
6. Step 6: Final answer
   x = 186,170.61