Finding the Fourth Proportional to 245,535.50, 368,308.01 and 77,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   245,535.50 : 368,308.01 = 77,061.31 : x
2. Step 2: Convert to fraction form
   245,535.50/368,308.01 = 77,061.31/x
3. Step 3: Cross multiply
   245,535.50x = 368,308.01 × 77,061.31
4. Step 4: Simplify right side
   245,535.50x = 28,382,297,005.98
5. Step 5: Solve for x
   x = 28,382,297,005.98/245,535.50
6. Step 6: Final answer
   x = 115,593.45