Finding the Fourth Proportional to 139,816.96, 209,550.30 and 110,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,816.96 : 209,550.30 = 110,117.50 : x
2. Step 2: Convert to fraction form
   139,816.96/209,550.30 = 110,117.50/x
3. Step 3: Cross multiply
   139,816.96x = 209,550.30 × 110,117.50
4. Step 4: Simplify right side
   139,816.96x = 23,075,155,160.25
5. Step 5: Solve for x
   x = 23,075,155,160.25/139,816.96
6. Step 6: Final answer
   x = 165,038.31