Finding the Fourth Proportional to 172,164.45, 237,518.91 and 99,553.98

Step by Step Solution

1. Step 1: Write the proportion equation
   172,164.45 : 237,518.91 = 99,553.98 : x
2. Step 2: Convert to fraction form
   172,164.45/237,518.91 = 99,553.98/x
3. Step 3: Cross multiply
   172,164.45x = 237,518.91 × 99,553.98
4. Step 4: Simplify right side
   172,164.45x = 23,645,952,815.76
5. Step 5: Solve for x
   x = 23,645,952,815.76/172,164.45
6. Step 6: Final answer
   x = 137,345.15