Finding the Fourth Proportional to 101,942.10, 140,681.98 and 56,624.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,942.10 : 140,681.98 = 56,624.28 : x
2. Step 2: Convert to fraction form
   101,942.10/140,681.98 = 56,624.28/x
3. Step 3: Cross multiply
   101,942.10x = 140,681.98 × 56,624.28
4. Step 4: Simplify right side
   101,942.10x = 7,966,015,826.47
5. Step 5: Solve for x
   x = 7,966,015,826.47/101,942.10
6. Step 6: Final answer
   x = 78,142.55