Finding the Fourth Proportional to 101,870.57, 140,574.71 and 56,546.35

Step by Step Solution

1. Step 1: Write the proportion equation
   101,870.57 : 140,574.71 = 56,546.35 : x
2. Step 2: Convert to fraction form
   101,870.57/140,574.71 = 56,546.35/x
3. Step 3: Cross multiply
   101,870.57x = 140,574.71 × 56,546.35
4. Step 4: Simplify right side
   101,870.57x = 7,948,986,542.74
5. Step 5: Solve for x
   x = 7,948,986,542.74/101,870.57
6. Step 6: Final answer
   x = 78,030.25