Finding the Fourth Proportional to 86,050.98, 118,426.77 and 72,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,050.98 : 118,426.77 = 72,796.50 : x
2. Step 2: Convert to fraction form
   86,050.98/118,426.77 = 72,796.50/x
3. Step 3: Cross multiply
   86,050.98x = 118,426.77 × 72,796.50
4. Step 4: Simplify right side
   86,050.98x = 8,621,054,362.31
5. Step 5: Solve for x
   x = 8,621,054,362.31/86,050.98
6. Step 6: Final answer
   x = 100,185.43