Finding the Fourth Proportional to 77,957.30, 107,580.76 and 42,147.32

Step by Step Solution

1. Step 1: Write the proportion equation
   77,957.30 : 107,580.76 = 42,147.32 : x
2. Step 2: Convert to fraction form
   77,957.30/107,580.76 = 42,147.32/x
3. Step 3: Cross multiply
   77,957.30x = 107,580.76 × 42,147.32
4. Step 4: Simplify right side
   77,957.30x = 4,534,240,074.29
5. Step 5: Solve for x
   x = 4,534,240,074.29/77,957.30
6. Step 6: Final answer
   x = 58,163.12