Finding the Fourth Proportional to 101,423.63, 139,961.99 and 56,100.49

Step by Step Solution

1. Step 1: Write the proportion equation
   101,423.63 : 139,961.99 = 56,100.49 : x
2. Step 2: Convert to fraction form
   101,423.63/139,961.99 = 56,100.49/x
3. Step 3: Cross multiply
   101,423.63x = 139,961.99 × 56,100.49
4. Step 4: Simplify right side
   101,423.63x = 7,851,936,010.72
5. Step 5: Solve for x
   x = 7,851,936,010.72/101,423.63
6. Step 6: Final answer
   x = 77,417.22