Finding the Fourth Proportional to 99,547.89, 137,376.06 and 54,835.89

Step by Step Solution

1. Step 1: Write the proportion equation
   99,547.89 : 137,376.06 = 54,835.89 : x
2. Step 2: Convert to fraction form
   99,547.89/137,376.06 = 54,835.89/x
3. Step 3: Cross multiply
   99,547.89x = 137,376.06 × 54,835.89
4. Step 4: Simplify right side
   99,547.89x = 7,533,138,514.79
5. Step 5: Solve for x
   x = 7,533,138,514.79/99,547.89
6. Step 6: Final answer
   x = 75,673.51