Finding the Fourth Proportional to 157,300.76, 217,149.72 and 100,745.48

Step by Step Solution

1. Step 1: Write the proportion equation
   157,300.76 : 217,149.72 = 100,745.48 : x
2. Step 2: Convert to fraction form
   157,300.76/217,149.72 = 100,745.48/x
3. Step 3: Cross multiply
   157,300.76x = 217,149.72 × 100,745.48
4. Step 4: Simplify right side
   157,300.76x = 21,876,852,773.27
5. Step 5: Solve for x
   x = 21,876,852,773.27/157,300.76
6. Step 6: Final answer
   x = 139,076.59