Finding the Fourth Proportional to 101,870.31, 140,628.12 and 61,053.83

Step by Step Solution

1. Step 1: Write the proportion equation
   101,870.31 : 140,628.12 = 61,053.83 : x
2. Step 2: Convert to fraction form
   101,870.31/140,628.12 = 61,053.83/x
3. Step 3: Cross multiply
   101,870.31x = 140,628.12 × 61,053.83
4. Step 4: Simplify right side
   101,870.31x = 8,585,885,046.59
5. Step 5: Solve for x
   x = 8,585,885,046.59/101,870.31
6. Step 6: Final answer
   x = 84,282.51