Finding the Fourth Proportional to 191,928.72, 287,896.72 and 65,597.92

Step by Step Solution

1. Step 1: Write the proportion equation
   191,928.72 : 287,896.72 = 65,597.92 : x
2. Step 2: Convert to fraction form
   191,928.72/287,896.72 = 65,597.92/x
3. Step 3: Cross multiply
   191,928.72x = 287,896.72 × 65,597.92
4. Step 4: Simplify right side
   191,928.72x = 18,885,426,006.82
5. Step 5: Solve for x
   x = 18,885,426,006.82/191,928.72
6. Step 6: Final answer
   x = 98,398.12