Finding the Fourth Proportional to 99,411.89, 137,184.32 and 54,090.06

Step by Step Solution

1. Step 1: Write the proportion equation
   99,411.89 : 137,184.32 = 54,090.06 : x
2. Step 2: Convert to fraction form
   99,411.89/137,184.32 = 54,090.06/x
3. Step 3: Cross multiply
   99,411.89x = 137,184.32 × 54,090.06
4. Step 4: Simplify right side
   99,411.89x = 7,420,307,829.41
5. Step 5: Solve for x
   x = 7,420,307,829.41/99,411.89
6. Step 6: Final answer
   x = 74,642.06