Finding the Fourth Proportional to 139,158.72, 209,025.57 and 133,094.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158.72 : 209,025.57 = 133,094.35 : x
2. Step 2: Convert to fraction form
   139,158.72/209,025.57 = 133,094.35/x
3. Step 3: Cross multiply
   139,158.72x = 209,025.57 × 133,094.35
4. Step 4: Simplify right side
   139,158.72x = 27,820,121,327.40
5. Step 5: Solve for x
   x = 27,820,121,327.40/139,158.72
6. Step 6: Final answer
   x = 199,916.48