Finding the Fourth Proportional to 47,078.06, 64,985.42 and 31,184.06

Step by Step Solution

1. Step 1: Write the proportion equation
   47,078.06 : 64,985.42 = 31,184.06 : x
2. Step 2: Convert to fraction form
   47,078.06/64,985.42 = 31,184.06/x
3. Step 3: Cross multiply
   47,078.06x = 64,985.42 × 31,184.06
4. Step 4: Simplify right side
   47,078.06x = 2,026,509,080.48
5. Step 5: Solve for x
   x = 2,026,509,080.48/47,078.06
6. Step 6: Final answer
   x = 43,045.72