Finding the Fourth Proportional to 157,043.76, 216,725.72 and 89,988.72

Step by Step Solution

1. Step 1: Write the proportion equation
   157,043.76 : 216,725.72 = 89,988.72 : x
2. Step 2: Convert to fraction form
   157,043.76/216,725.72 = 89,988.72/x
3. Step 3: Cross multiply
   157,043.76x = 216,725.72 × 89,988.72
4. Step 4: Simplify right side
   157,043.76x = 19,502,870,133.88
5. Step 5: Solve for x
   x = 19,502,870,133.88/157,043.76
6. Step 6: Final answer
   x = 124,187.49