Finding the Fourth Proportional to 56,297.34, 77,686.83 and 31,146.84

Step by Step Solution

1. Step 1: Write the proportion equation
   56,297.34 : 77,686.83 = 31,146.84 : x
2. Step 2: Convert to fraction form
   56,297.34/77,686.83 = 31,146.84/x
3. Step 3: Cross multiply
   56,297.34x = 77,686.83 × 31,146.84
4. Step 4: Simplify right side
   56,297.34x = 2,419,699,264.12
5. Step 5: Solve for x
   x = 2,419,699,264.12/56,297.34
6. Step 6: Final answer
   x = 42,980.70