Finding the Fourth Proportional to 139,482.84, 209,225.72 and 55,263.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,482.84 : 209,225.72 = 55,263.50 : x
2. Step 2: Convert to fraction form
   139,482.84/209,225.72 = 55,263.50/x
3. Step 3: Cross multiply
   139,482.84x = 209,225.72 × 55,263.50
4. Step 4: Simplify right side
   139,482.84x = 11,562,545,577.22
5. Step 5: Solve for x
   x = 11,562,545,577.22/139,482.84
6. Step 6: Final answer
   x = 82,895.83