Finding the Fourth Proportional to 139,873.25, 193,026.50 and 76,212.11

Step by Step Solution

1. Step 1: Write the proportion equation
   139,873.25 : 193,026.50 = 76,212.11 : x
2. Step 2: Convert to fraction form
   139,873.25/193,026.50 = 76,212.11/x
3. Step 3: Cross multiply
   139,873.25x = 193,026.50 × 76,212.11
4. Step 4: Simplify right side
   139,873.25x = 14,710,955,504.72
5. Step 5: Solve for x
   x = 14,710,955,504.72/139,873.25
6. Step 6: Final answer
   x = 105,173.48