Finding the Fourth Proportional to 139,342.66, 208,814.72 and 111,347.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,342.66 : 208,814.72 = 111,347.84 : x
2. Step 2: Convert to fraction form
   139,342.66/208,814.72 = 111,347.84/x
3. Step 3: Cross multiply
   139,342.66x = 208,814.72 × 111,347.84
4. Step 4: Simplify right side
   139,342.66x = 23,251,068,032.20
5. Step 5: Solve for x
   x = 23,251,068,032.20/139,342.66
6. Step 6: Final answer
   x = 166,862.52