Finding the Fourth Proportional to 47,109.52, 70,664.69 and 13,830.13

Step by Step Solution

1. Step 1: Write the proportion equation
   47,109.52 : 70,664.69 = 13,830.13 : x
2. Step 2: Convert to fraction form
   47,109.52/70,664.69 = 13,830.13/x
3. Step 3: Cross multiply
   47,109.52x = 70,664.69 × 13,830.13
4. Step 4: Simplify right side
   47,109.52x = 977,301,779.96
5. Step 5: Solve for x
   x = 977,301,779.96/47,109.52
6. Step 6: Final answer
   x = 20,745.31