Finding the Fourth Proportional to 101,118.30, 139,571.01 and 58,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,118.30 : 139,571.01 = 58,690.50 : x
2. Step 2: Convert to fraction form
   101,118.30/139,571.01 = 58,690.50/x
3. Step 3: Cross multiply
   101,118.30x = 139,571.01 × 58,690.50
4. Step 4: Simplify right side
   101,118.30x = 8,191,492,362.41
5. Step 5: Solve for x
   x = 8,191,492,362.41/101,118.30
6. Step 6: Final answer
   x = 81,009.00