Finding the Fourth Proportional to 99,336.76, 137,084.72 and 54,624.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,336.76 : 137,084.72 = 54,624.76 : x
2. Step 2: Convert to fraction form
   99,336.76/137,084.72 = 54,624.76/x
3. Step 3: Cross multiply
   99,336.76x = 137,084.72 × 54,624.76
4. Step 4: Simplify right side
   99,336.76x = 7,488,219,929.67
5. Step 5: Solve for x
   x = 7,488,219,929.67/99,336.76
6. Step 6: Final answer
   x = 75,382.16