Finding the Fourth Proportional to 215,796.05, 297,926.28 and 191,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,796.05 : 297,926.28 = 191,856.50 : x
2. Step 2: Convert to fraction form
   215,796.05/297,926.28 = 191,856.50/x
3. Step 3: Cross multiply
   215,796.05x = 297,926.28 × 191,856.50
4. Step 4: Simplify right side
   215,796.05x = 57,159,091,849.19
5. Step 5: Solve for x
   x = 57,159,091,849.19/215,796.05
6. Step 6: Final answer
   x = 264,875.53