Finding the Fourth Proportional to 99,973.02, 137,908.17 and 64,123.14

Step by Step Solution

1. Step 1: Write the proportion equation
   99,973.02 : 137,908.17 = 64,123.14 : x
2. Step 2: Convert to fraction form
   99,973.02/137,908.17 = 64,123.14/x
3. Step 3: Cross multiply
   99,973.02x = 137,908.17 × 64,123.14
4. Step 4: Simplify right side
   99,973.02x = 8,843,104,892.05
5. Step 5: Solve for x
   x = 8,843,104,892.05/99,973.02
6. Step 6: Final answer
   x = 88,454.91