Finding the Fourth Proportional to 42,370.56, 63,543.72 and 17,070

Step by Step Solution

1. Step 1: Write the proportion equation
   42,370.56 : 63,543.72 = 17,070 : x
2. Step 2: Convert to fraction form
   42,370.56/63,543.72 = 17,070/x
3. Step 3: Cross multiply
   42,370.56x = 63,543.72 × 17,070
4. Step 4: Simplify right side
   42,370.56x = 1,084,691,300.40
5. Step 5: Solve for x
   x = 1,084,691,300.40/42,370.56
6. Step 6: Final answer
   x = 25,600.12