Finding the Fourth Proportional to 113,598.72, 170,460.32 and 42,570.36

Step by Step Solution

1. Step 1: Write the proportion equation
   113,598.72 : 170,460.32 = 42,570.36 : x
2. Step 2: Convert to fraction form
   113,598.72/170,460.32 = 42,570.36/x
3. Step 3: Cross multiply
   113,598.72x = 170,460.32 × 42,570.36
4. Step 4: Simplify right side
   113,598.72x = 7,256,556,975.26
5. Step 5: Solve for x
   x = 7,256,556,975.26/113,598.72
6. Step 6: Final answer
   x = 63,878.86