Finding the Fourth Proportional to 56,301, 77,695.46 and 31,152.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,301 : 77,695.46 = 31,152.20 : x
2. Step 2: Convert to fraction form
   56,301/77,695.46 = 31,152.20/x
3. Step 3: Cross multiply
   56,301x = 77,695.46 × 31,152.20
4. Step 4: Simplify right side
   56,301x = 2,420,384,509.01
5. Step 5: Solve for x
   x = 2,420,384,509.01/56,301
6. Step 6: Final answer
   x = 42,990.08