Finding the Fourth Proportional to 99,889.18, 137,845.34 and 54,566.00

Step by Step Solution

1. Step 1: Write the proportion equation
   99,889.18 : 137,845.34 = 54,566.00 : x
2. Step 2: Convert to fraction form
   99,889.18/137,845.34 = 54,566.00/x
3. Step 3: Cross multiply
   99,889.18x = 137,845.34 × 54,566.00
4. Step 4: Simplify right side
   99,889.18x = 7,521,667,860.38
5. Step 5: Solve for x
   x = 7,521,667,860.38/99,889.18
6. Step 6: Final answer
   x = 75,300.13