Finding the Fourth Proportional to 137,945.82, 190,385.79 and 84,261.72

Step by Step Solution

1. Step 1: Write the proportion equation
   137,945.82 : 190,385.79 = 84,261.72 : x
2. Step 2: Convert to fraction form
   137,945.82/190,385.79 = 84,261.72/x
3. Step 3: Cross multiply
   137,945.82x = 190,385.79 × 84,261.72
4. Step 4: Simplify right side
   137,945.82x = 16,042,234,128.96
5. Step 5: Solve for x
   x = 16,042,234,128.96/137,945.82
6. Step 6: Final answer
   x = 116,293.73