Finding the Fourth Proportional to 70,577.31, 105,865.35 and 31,134.47

Step by Step Solution

1. Step 1: Write the proportion equation
   70,577.31 : 105,865.35 = 31,134.47 : x
2. Step 2: Convert to fraction form
   70,577.31/105,865.35 = 31,134.47/x
3. Step 3: Cross multiply
   70,577.31x = 105,865.35 × 31,134.47
4. Step 4: Simplify right side
   70,577.31x = 3,296,061,034.29
5. Step 5: Solve for x
   x = 3,296,061,034.29/70,577.31
6. Step 6: Final answer
   x = 46,701.43