Finding the Fourth Proportional to 56,111, 77,434.80 and 30,962.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,111 : 77,434.80 = 30,962.12 : x
2. Step 2: Convert to fraction form
   56,111/77,434.80 = 30,962.12/x
3. Step 3: Cross multiply
   56,111x = 77,434.80 × 30,962.12
4. Step 4: Simplify right side
   56,111x = 2,397,545,569.78
5. Step 5: Solve for x
   x = 2,397,545,569.78/56,111
6. Step 6: Final answer
   x = 42,728.62