Finding the Fourth Proportional to 112,513.16, 155,141.89 and 71,612.51

Step by Step Solution

1. Step 1: Write the proportion equation
   112,513.16 : 155,141.89 = 71,612.51 : x
2. Step 2: Convert to fraction form
   112,513.16/155,141.89 = 71,612.51/x
3. Step 3: Cross multiply
   112,513.16x = 155,141.89 × 71,612.51
4. Step 4: Simplify right side
   112,513.16x = 11,110,099,395.71
5. Step 5: Solve for x
   x = 11,110,099,395.71/112,513.16
6. Step 6: Final answer
   x = 98,744.89