Finding the Fourth Proportional to 102,068.98, 140,859.88 and 56,751.62

Step by Step Solution

1. Step 1: Write the proportion equation
   102,068.98 : 140,859.88 = 56,751.62 : x
2. Step 2: Convert to fraction form
   102,068.98/140,859.88 = 56,751.62/x
3. Step 3: Cross multiply
   102,068.98x = 140,859.88 × 56,751.62
4. Step 4: Simplify right side
   102,068.98x = 7,994,025,536.83
5. Step 5: Solve for x
   x = 7,994,025,536.83/102,068.98
6. Step 6: Final answer
   x = 78,319.84