Finding the Fourth Proportional to 151,870.12, 209,679.30 and 135,926.92

Step by Step Solution

1. Step 1: Write the proportion equation
   151,870.12 : 209,679.30 = 135,926.92 : x
2. Step 2: Convert to fraction form
   151,870.12/209,679.30 = 135,926.92/x
3. Step 3: Cross multiply
   151,870.12x = 209,679.30 × 135,926.92
4. Step 4: Simplify right side
   151,870.12x = 28,501,061,436.76
5. Step 5: Solve for x
   x = 28,501,061,436.76/151,870.12
6. Step 6: Final answer
   x = 187,667.34