Finding the Fourth Proportional to 98,824.72, 136,376.76 and 54,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,824.72 : 136,376.76 = 54,112.72 : x
2. Step 2: Convert to fraction form
   98,824.72/136,376.76 = 54,112.72/x
3. Step 3: Cross multiply
   98,824.72x = 136,376.76 × 54,112.72
4. Step 4: Simplify right side
   98,824.72x = 7,379,717,428.39
5. Step 5: Solve for x
   x = 7,379,717,428.39/98,824.72
6. Step 6: Final answer
   x = 74,674.81