Finding the Fourth Proportional to 139,911.52, 193,109.06 and 88,914.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,911.52 : 193,109.06 = 88,914.31 : x
2. Step 2: Convert to fraction form
   139,911.52/193,109.06 = 88,914.31/x
3. Step 3: Cross multiply
   139,911.52x = 193,109.06 × 88,914.31
4. Step 4: Simplify right side
   139,911.52x = 17,170,158,564.16
5. Step 5: Solve for x
   x = 17,170,158,564.16/139,911.52
6. Step 6: Final answer
   x = 122,721.55