Finding the Fourth Proportional to 77,901.98, 107,504.78 and 42,091.98

Step by Step Solution

1. Step 1: Write the proportion equation
   77,901.98 : 107,504.78 = 42,091.98 : x
2. Step 2: Convert to fraction form
   77,901.98/107,504.78 = 42,091.98/x
3. Step 3: Cross multiply
   77,901.98x = 107,504.78 × 42,091.98
4. Step 4: Simplify right side
   77,901.98x = 4,525,088,839.20
5. Step 5: Solve for x
   x = 4,525,088,839.20/77,901.98
6. Step 6: Final answer
   x = 58,086.96