Finding the Fourth Proportional to 99,438, 137,224.56 and 54,726

Step by Step Solution

1. Step 1: Write the proportion equation
   99,438 : 137,224.56 = 54,726 : x
2. Step 2: Convert to fraction form
   99,438/137,224.56 = 54,726/x
3. Step 3: Cross multiply
   99,438x = 137,224.56 × 54,726
4. Step 4: Simplify right side
   99,438x = 7,509,751,270.56
5. Step 5: Solve for x
   x = 7,509,751,270.56/99,438
6. Step 6: Final answer
   x = 75,521.95