Finding the Fourth Proportional to 101,114.63, 139,538.18 and 56,402.63

Step by Step Solution

1. Step 1: Write the proportion equation
   101,114.63 : 139,538.18 = 56,402.63 : x
2. Step 2: Convert to fraction form
   101,114.63/139,538.18 = 56,402.63/x
3. Step 3: Cross multiply
   101,114.63x = 139,538.18 × 56,402.63
4. Step 4: Simplify right side
   101,114.63x = 7,870,319,780.73
5. Step 5: Solve for x
   x = 7,870,319,780.73/101,114.63
6. Step 6: Final answer
   x = 77,835.62