Finding the Fourth Proportional to 99,293.90, 137,025.33 and 53,971.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,293.90 : 137,025.33 = 53,971.88 : x
2. Step 2: Convert to fraction form
   99,293.90/137,025.33 = 53,971.88/x
3. Step 3: Cross multiply
   99,293.90x = 137,025.33 × 53,971.88
4. Step 4: Simplify right side
   99,293.90x = 7,395,514,667.72
5. Step 5: Solve for x
   x = 7,395,514,667.72/99,293.90
6. Step 6: Final answer
   x = 74,481.06