Finding the Fourth Proportional to 128,801.37, 177,540.52 and 101,532.98

Step by Step Solution

1. Step 1: Write the proportion equation
   128,801.37 : 177,540.52 = 101,532.98 : x
2. Step 2: Convert to fraction form
   128,801.37/177,540.52 = 101,532.98/x
3. Step 3: Cross multiply
   128,801.37x = 177,540.52 × 101,532.98
4. Step 4: Simplify right side
   128,801.37x = 18,026,218,256.37
5. Step 5: Solve for x
   x = 18,026,218,256.37/128,801.37
6. Step 6: Final answer
   x = 139,953.62