Finding the Fourth Proportional to 154,818.58, 213,695 and 101,111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   154,818.58 : 213,695 = 101,111.94 : x
2. Step 2: Convert to fraction form
   154,818.58/213,695 = 101,111.94/x
3. Step 3: Cross multiply
   154,818.58x = 213,695 × 101,111.94
4. Step 4: Simplify right side
   154,818.58x = 21,607,116,018.30
5. Step 5: Solve for x
   x = 21,607,116,018.30/154,818.58
6. Step 6: Final answer
   x = 139,564.10