Finding the Fourth Proportional to 56,496.21, 77,964.55 and 31,003

Step by Step Solution

1. Step 1: Write the proportion equation
   56,496.21 : 77,964.55 = 31,003 : x
2. Step 2: Convert to fraction form
   56,496.21/77,964.55 = 31,003/x
3. Step 3: Cross multiply
   56,496.21x = 77,964.55 × 31,003
4. Step 4: Simplify right side
   56,496.21x = 2,417,134,943.65
5. Step 5: Solve for x
   x = 2,417,134,943.65/56,496.21
6. Step 6: Final answer
   x = 42,784.02