Finding the Fourth Proportional to 101,481.12, 152,046.72 and 78,999.84

Step by Step Solution

1. Step 1: Write the proportion equation
   101,481.12 : 152,046.72 = 78,999.84 : x
2. Step 2: Convert to fraction form
   101,481.12/152,046.72 = 78,999.84/x
3. Step 3: Cross multiply
   101,481.12x = 152,046.72 × 78,999.84
4. Step 4: Simplify right side
   101,481.12x = 12,011,666,552.52
5. Step 5: Solve for x
   x = 12,011,666,552.52/101,481.12
6. Step 6: Final answer
   x = 118,363.56