Finding the Fourth Proportional to 112,399.81, 155,109.89 and 61,411.44

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.81 : 155,109.89 = 61,411.44 : x
2. Step 2: Convert to fraction form
   112,399.81/155,109.89 = 61,411.44/x
3. Step 3: Cross multiply
   112,399.81x = 155,109.89 × 61,411.44
4. Step 4: Simplify right side
   112,399.81x = 9,525,521,856.67
5. Step 5: Solve for x
   x = 9,525,521,856.67/112,399.81
6. Step 6: Final answer
   x = 84,746.78