Finding the Fourth Proportional to 104,845.39, 157,112.56 and 77,007.31

Step by Step Solution

1. Step 1: Write the proportion equation
   104,845.39 : 157,112.56 = 77,007.31 : x
2. Step 2: Convert to fraction form
   104,845.39/157,112.56 = 77,007.31/x
3. Step 3: Cross multiply
   104,845.39x = 157,112.56 × 77,007.31
4. Step 4: Simplify right side
   104,845.39x = 12,098,815,316.29
5. Step 5: Solve for x
   x = 12,098,815,316.29/104,845.39
6. Step 6: Final answer
   x = 115,396.73