Finding the Fourth Proportional to 101,914.06, 140,638.69 and 56,590.86

Step by Step Solution

1. Step 1: Write the proportion equation
   101,914.06 : 140,638.69 = 56,590.86 : x
2. Step 2: Convert to fraction form
   101,914.06/140,638.69 = 56,590.86/x
3. Step 3: Cross multiply
   101,914.06x = 140,638.69 × 56,590.86
4. Step 4: Simplify right side
   101,914.06x = 7,958,864,416.37
5. Step 5: Solve for x
   x = 7,958,864,416.37/101,914.06
6. Step 6: Final answer
   x = 78,093.88