Finding the Fourth Proportional to 53,886.06, 74,362.72 and 31,238.17

Step by Step Solution

1. Step 1: Write the proportion equation
   53,886.06 : 74,362.72 = 31,238.17 : x
2. Step 2: Convert to fraction form
   53,886.06/74,362.72 = 31,238.17/x
3. Step 3: Cross multiply
   53,886.06x = 74,362.72 × 31,238.17
4. Step 4: Simplify right side
   53,886.06x = 2,322,955,025.02
5. Step 5: Solve for x
   x = 2,322,955,025.02/53,886.06
6. Step 6: Final answer
   x = 43,108.64