Finding the Fourth Proportional to 77,945.01, 107,563.98 and 42,135.04

Step by Step Solution

1. Step 1: Write the proportion equation
   77,945.01 : 107,563.98 = 42,135.04 : x
2. Step 2: Convert to fraction form
   77,945.01/107,563.98 = 42,135.04/x
3. Step 3: Cross multiply
   77,945.01x = 107,563.98 × 42,135.04
4. Step 4: Simplify right side
   77,945.01x = 4,532,212,599.86
5. Step 5: Solve for x
   x = 4,532,212,599.86/77,945.01
6. Step 6: Final answer
   x = 58,146.28