Finding the Fourth Proportional to 91,840.04, 137,628.62 and 52,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   91,840.04 : 137,628.62 = 52,315.52 : x
2. Step 2: Convert to fraction form
   91,840.04/137,628.62 = 52,315.52/x
3. Step 3: Cross multiply
   91,840.04x = 137,628.62 × 52,315.52
4. Step 4: Simplify right side
   91,840.04x = 7,200,112,822.18
5. Step 5: Solve for x
   x = 7,200,112,822.18/91,840.04
6. Step 6: Final answer
   x = 78,398.41