Finding the Fourth Proportional to 151,656.78, 209,285.77 and 83,677.98

Step by Step Solution

1. Step 1: Write the proportion equation
   151,656.78 : 209,285.77 = 83,677.98 : x
2. Step 2: Convert to fraction form
   151,656.78/209,285.77 = 83,677.98/x
3. Step 3: Cross multiply
   151,656.78x = 209,285.77 × 83,677.98
4. Step 4: Simplify right side
   151,656.78x = 17,512,610,581.17
5. Step 5: Solve for x
   x = 17,512,610,581.17/151,656.78
6. Step 6: Final answer
   x = 115,475.29