Finding the Fourth Proportional to 262,784.42, 392,736.59 and 191,856.42

Step by Step Solution

1. Step 1: Write the proportion equation
   262,784.42 : 392,736.59 = 191,856.42 : x
2. Step 2: Convert to fraction form
   262,784.42/392,736.59 = 191,856.42/x
3. Step 3: Cross multiply
   262,784.42x = 392,736.59 × 191,856.42
4. Step 4: Simplify right side
   262,784.42x = 75,349,035,201.13
5. Step 5: Solve for x
   x = 75,349,035,201.13/262,784.42
6. Step 6: Final answer
   x = 286,733.27