Finding the Fourth Proportional to 101,437.37, 139,987.69 and 56,114.57

Step by Step Solution

1. Step 1: Write the proportion equation
   101,437.37 : 139,987.69 = 56,114.57 : x
2. Step 2: Convert to fraction form
   101,437.37/139,987.69 = 56,114.57/x
3. Step 3: Cross multiply
   101,437.37x = 139,987.69 × 56,114.57
4. Step 4: Simplify right side
   101,437.37x = 7,855,348,254.83
5. Step 5: Solve for x
   x = 7,855,348,254.83/101,437.37
6. Step 6: Final answer
   x = 77,440.38