Finding the Fourth Proportional to 115,072.77, 158,849.52 and 77,368.89

Step by Step Solution

1. Step 1: Write the proportion equation
   115,072.77 : 158,849.52 = 77,368.89 : x
2. Step 2: Convert to fraction form
   115,072.77/158,849.52 = 77,368.89/x
3. Step 3: Cross multiply
   115,072.77x = 158,849.52 × 77,368.89
4. Step 4: Simplify right side
   115,072.77x = 12,290,011,039.43
5. Step 5: Solve for x
   x = 12,290,011,039.43/115,072.77
6. Step 6: Final answer
   x = 106,802.08