Finding the Fourth Proportional to 99,026.50, 136,656.57 and 54,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,026.50 : 136,656.57 = 54,314.50 : x
2. Step 2: Convert to fraction form
   99,026.50/136,656.57 = 54,314.50/x
3. Step 3: Cross multiply
   99,026.50x = 136,656.57 × 54,314.50
4. Step 4: Simplify right side
   99,026.50x = 7,422,433,271.27
5. Step 5: Solve for x
   x = 7,422,433,271.27/99,026.50
6. Step 6: Final answer
   x = 74,954.01