Finding the Fourth Proportional to 112,479.09, 155,227.95 and 64,731.39

Step by Step Solution

1. Step 1: Write the proportion equation
   112,479.09 : 155,227.95 = 64,731.39 : x
2. Step 2: Convert to fraction form
   112,479.09/155,227.95 = 64,731.39/x
3. Step 3: Cross multiply
   112,479.09x = 155,227.95 × 64,731.39
4. Step 4: Simplify right side
   112,479.09x = 10,048,120,970.35
5. Step 5: Solve for x
   x = 10,048,120,970.35/112,479.09
6. Step 6: Final answer
   x = 89,333.23