Finding the Fourth Proportional to 139,216.73, 191,973.86 and 82,617.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,216.73 : 191,973.86 = 82,617.17 : x
2. Step 2: Convert to fraction form
   139,216.73/191,973.86 = 82,617.17/x
3. Step 3: Cross multiply
   139,216.73x = 191,973.86 × 82,617.17
4. Step 4: Simplify right side
   139,216.73x = 15,860,335,964.04
5. Step 5: Solve for x
   x = 15,860,335,964.04/139,216.73
6. Step 6: Final answer
   x = 113,925.51