Finding the Fourth Proportional to 56,357.50, 77,773.35 and 31,207

Step by Step Solution

1. Step 1: Write the proportion equation
   56,357.50 : 77,773.35 = 31,207 : x
2. Step 2: Convert to fraction form
   56,357.50/77,773.35 = 31,207/x
3. Step 3: Cross multiply
   56,357.50x = 77,773.35 × 31,207
4. Step 4: Simplify right side
   56,357.50x = 2,427,072,933.45
5. Step 5: Solve for x
   x = 2,427,072,933.45/56,357.50
6. Step 6: Final answer
   x = 43,065.66