Finding the Fourth Proportional to 78,445.56, 117,752.58 and 31,729.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,445.56 : 117,752.58 = 31,729.08 : x
2. Step 2: Convert to fraction form
   78,445.56/117,752.58 = 31,729.08/x
3. Step 3: Cross multiply
   78,445.56x = 117,752.58 × 31,729.08
4. Step 4: Simplify right side
   78,445.56x = 3,736,181,031.03
5. Step 5: Solve for x
   x = 3,736,181,031.03/78,445.56
6. Step 6: Final answer
   x = 47,627.69