Finding the Fourth Proportional to 128,300.22, 177,047.16 and 70,936.23

Step by Step Solution

1. Step 1: Write the proportion equation
   128,300.22 : 177,047.16 = 70,936.23 : x
2. Step 2: Convert to fraction form
   128,300.22/177,047.16 = 70,936.23/x
3. Step 3: Cross multiply
   128,300.22x = 177,047.16 × 70,936.23
4. Step 4: Simplify right side
   128,300.22x = 12,559,058,062.61
5. Step 5: Solve for x
   x = 12,559,058,062.61/128,300.22
6. Step 6: Final answer
   x = 97,888.05