Finding the Fourth Proportional to 249,243, 343,956.78 and 136,066.92

Step by Step Solution

1. Step 1: Write the proportion equation
   249,243 : 343,956.78 = 136,066.92 : x
2. Step 2: Convert to fraction form
   249,243/343,956.78 = 136,066.92/x
3. Step 3: Cross multiply
   249,243x = 343,956.78 × 136,066.92
4. Step 4: Simplify right side
   249,243x = 46,801,139,667.72
5. Step 5: Solve for x
   x = 46,801,139,667.72/249,243
6. Step 6: Final answer
   x = 187,773.14