Finding the Fourth Proportional to 107,090.72, 160,428.72 and 51,725.60

Step by Step Solution

1. Step 1: Write the proportion equation
   107,090.72 : 160,428.72 = 51,725.60 : x
2. Step 2: Convert to fraction form
   107,090.72/160,428.72 = 51,725.60/x
3. Step 3: Cross multiply
   107,090.72x = 160,428.72 × 51,725.60
4. Step 4: Simplify right side
   107,090.72x = 8,298,271,799.23
5. Step 5: Solve for x
   x = 8,298,271,799.23/107,090.72
6. Step 6: Final answer
   x = 77,488.24