Finding the Fourth Proportional to 113,108.77, 155,985.82 and 76,864.31

Step by Step Solution

1. Step 1: Write the proportion equation
   113,108.77 : 155,985.82 = 76,864.31 : x
2. Step 2: Convert to fraction form
   113,108.77/155,985.82 = 76,864.31/x
3. Step 3: Cross multiply
   113,108.77x = 155,985.82 × 76,864.31
4. Step 4: Simplify right side
   113,108.77x = 11,989,742,036.94
5. Step 5: Solve for x
   x = 11,989,742,036.94/113,108.77
6. Step 6: Final answer
   x = 106,001.88