Finding the Fourth Proportional to 45,642.16, 68,381.02 and 42,897.34

Step by Step Solution

1. Step 1: Write the proportion equation
   45,642.16 : 68,381.02 = 42,897.34 : x
2. Step 2: Convert to fraction form
   45,642.16/68,381.02 = 42,897.34/x
3. Step 3: Cross multiply
   45,642.16x = 68,381.02 × 42,897.34
4. Step 4: Simplify right side
   45,642.16x = 2,933,363,864.49
5. Step 5: Solve for x
   x = 2,933,363,864.49/45,642.16
6. Step 6: Final answer
   x = 64,268.73