Finding the Fourth Proportional to 99,820.06, 137,753.63 and 54,498.16

Step by Step Solution

1. Step 1: Write the proportion equation
   99,820.06 : 137,753.63 = 54,498.16 : x
2. Step 2: Convert to fraction form
   99,820.06/137,753.63 = 54,498.16/x
3. Step 3: Cross multiply
   99,820.06x = 137,753.63 × 54,498.16
4. Step 4: Simplify right side
   99,820.06x = 7,507,318,679.55
5. Step 5: Solve for x
   x = 7,507,318,679.55/99,820.06
6. Step 6: Final answer
   x = 75,208.52