Finding the Fourth Proportional to 112,742.34, 155,545.80 and 64,309.47

Step by Step Solution

1. Step 1: Write the proportion equation
   112,742.34 : 155,545.80 = 64,309.47 : x
2. Step 2: Convert to fraction form
   112,742.34/155,545.80 = 64,309.47/x
3. Step 3: Cross multiply
   112,742.34x = 155,545.80 × 64,309.47
4. Step 4: Simplify right side
   112,742.34x = 10,003,067,958.73
5. Step 5: Solve for x
   x = 10,003,067,958.73/112,742.34
6. Step 6: Final answer
   x = 88,725.03