Finding the Fourth Proportional to 101,870.31, 140,573.99 and 56,544.73

Step by Step Solution

1. Step 1: Write the proportion equation
   101,870.31 : 140,573.99 = 56,544.73 : x
2. Step 2: Convert to fraction form
   101,870.31/140,573.99 = 56,544.73/x
3. Step 3: Cross multiply
   101,870.31x = 140,573.99 × 56,544.73
4. Step 4: Simplify right side
   101,870.31x = 7,948,718,309.57
5. Step 5: Solve for x
   x = 7,948,718,309.57/101,870.31
6. Step 6: Final answer
   x = 78,027.82