Finding the Fourth Proportional to 56,498.59, 77,968.18 and 31,005.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,498.59 : 77,968.18 = 31,005.15 : x
2. Step 2: Convert to fraction form
   56,498.59/77,968.18 = 31,005.15/x
3. Step 3: Cross multiply
   56,498.59x = 77,968.18 × 31,005.15
4. Step 4: Simplify right side
   56,498.59x = 2,417,415,116.13
5. Step 5: Solve for x
   x = 2,417,415,116.13/56,498.59
6. Step 6: Final answer
   x = 42,787.18