Finding the Fourth Proportional to 98,876.72, 136,449.96 and 54,164.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,876.72 : 136,449.96 = 54,164.72 : x
2. Step 2: Convert to fraction form
   98,876.72/136,449.96 = 54,164.72/x
3. Step 3: Cross multiply
   98,876.72x = 136,449.96 × 54,164.72
4. Step 4: Simplify right side
   98,876.72x = 7,390,773,877.41
5. Step 5: Solve for x
   x = 7,390,773,877.41/98,876.72
6. Step 6: Final answer
   x = 74,747.36