Finding the Fourth Proportional to 58,643.61, 80,927.88 and 31,785.90

Step by Step Solution

1. Step 1: Write the proportion equation
   58,643.61 : 80,927.88 = 31,785.90 : x
2. Step 2: Convert to fraction form
   58,643.61/80,927.88 = 31,785.90/x
3. Step 3: Cross multiply
   58,643.61x = 80,927.88 × 31,785.90
4. Step 4: Simplify right side
   58,643.61x = 2,572,365,500.89
5. Step 5: Solve for x
   x = 2,572,365,500.89/58,643.61
6. Step 6: Final answer
   x = 43,864.38