Finding the Fourth Proportional to 99,635.21, 137,493.83 and 54,314.07

Step by Step Solution

1. Step 1: Write the proportion equation
   99,635.21 : 137,493.83 = 54,314.07 : x
2. Step 2: Convert to fraction form
   99,635.21/137,493.83 = 54,314.07/x
3. Step 3: Cross multiply
   99,635.21x = 137,493.83 × 54,314.07
4. Step 4: Simplify right side
   99,635.21x = 7,467,849,507.19
5. Step 5: Solve for x
   x = 7,467,849,507.19/99,635.21
6. Step 6: Final answer
   x = 74,951.91