Finding the Fourth Proportional to 56,499, 77,968.56 and 31,005.51

Step by Step Solution

1. Step 1: Write the proportion equation
   56,499 : 77,968.56 = 31,005.51 : x
2. Step 2: Convert to fraction form
   56,499/77,968.56 = 31,005.51/x
3. Step 3: Cross multiply
   56,499x = 77,968.56 × 31,005.51
4. Step 4: Simplify right side
   56,499x = 2,417,454,966.77
5. Step 5: Solve for x
   x = 2,417,454,966.77/56,499
6. Step 6: Final answer
   x = 42,787.57