Finding the Fourth Proportional to 112,717.96, 155,550.54 and 64,970.98

Step by Step Solution

1. Step 1: Write the proportion equation
   112,717.96 : 155,550.54 = 64,970.98 : x
2. Step 2: Convert to fraction form
   112,717.96/155,550.54 = 64,970.98/x
3. Step 3: Cross multiply
   112,717.96x = 155,550.54 × 64,970.98
4. Step 4: Simplify right side
   112,717.96x = 10,106,271,023.33
5. Step 5: Solve for x
   x = 10,106,271,023.33/112,717.96
6. Step 6: Final answer
   x = 89,659.81