Finding the Fourth Proportional to 139,869.56, 193,092.98 and 109,176.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,869.56 : 193,092.98 = 109,176.75 : x
2. Step 2: Convert to fraction form
   139,869.56/193,092.98 = 109,176.75/x
3. Step 3: Cross multiply
   139,869.56x = 193,092.98 × 109,176.75
4. Step 4: Simplify right side
   139,869.56x = 21,081,264,004.22
5. Step 5: Solve for x
   x = 21,081,264,004.22/139,869.56
6. Step 6: Final answer
   x = 150,720.89