Finding the Fourth Proportional to 191,467.03, 287,200.41 and 86,162.98

Step by Step Solution

1. Step 1: Write the proportion equation
   191,467.03 : 287,200.41 = 86,162.98 : x
2. Step 2: Convert to fraction form
   191,467.03/287,200.41 = 86,162.98/x
3. Step 3: Cross multiply
   191,467.03x = 287,200.41 × 86,162.98
4. Step 4: Simplify right side
   191,467.03x = 24,746,043,182.82
5. Step 5: Solve for x
   x = 24,746,043,182.82/191,467.03
6. Step 6: Final answer
   x = 129,244.41