Finding the Fourth Proportional to 56,261.82, 77,641.83 and 31,111.74

Step by Step Solution

1. Step 1: Write the proportion equation
   56,261.82 : 77,641.83 = 31,111.74 : x
2. Step 2: Convert to fraction form
   56,261.82/77,641.83 = 31,111.74/x
3. Step 3: Cross multiply
   56,261.82x = 77,641.83 × 31,111.74
4. Step 4: Simplify right side
   56,261.82x = 2,415,572,428.08
5. Step 5: Solve for x
   x = 2,415,572,428.08/56,261.82
6. Step 6: Final answer
   x = 42,934.49