Finding the Fourth Proportional to 77,448.33, 106,874.27 and 42,991.29

Step by Step Solution

1. Step 1: Write the proportion equation
   77,448.33 : 106,874.27 = 42,991.29 : x
2. Step 2: Convert to fraction form
   77,448.33/106,874.27 = 42,991.29/x
3. Step 3: Cross multiply
   77,448.33x = 106,874.27 × 42,991.29
4. Step 4: Simplify right side
   77,448.33x = 4,594,662,520.15
5. Step 5: Solve for x
   x = 4,594,662,520.15/77,448.33
6. Step 6: Final answer
   x = 59,325.52