Finding the Fourth Proportional to 102,150.99, 140,968.35 and 56,828.52

Step by Step Solution

1. Step 1: Write the proportion equation
   102,150.99 : 140,968.35 = 56,828.52 : x
2. Step 2: Convert to fraction form
   102,150.99/140,968.35 = 56,828.52/x
3. Step 3: Cross multiply
   102,150.99x = 140,968.35 × 56,828.52
4. Step 4: Simplify right side
   102,150.99x = 8,011,022,697.34
5. Step 5: Solve for x
   x = 8,011,022,697.34/102,150.99
6. Step 6: Final answer
   x = 78,423.35