Finding the Fourth Proportional to 101,048.50, 139,445.06 and 55,730.69

Step by Step Solution

1. Step 1: Write the proportion equation
   101,048.50 : 139,445.06 = 55,730.69 : x
2. Step 2: Convert to fraction form
   101,048.50/139,445.06 = 55,730.69/x
3. Step 3: Cross multiply
   101,048.50x = 139,445.06 × 55,730.69
4. Step 4: Simplify right side
   101,048.50x = 7,771,369,410.89
5. Step 5: Solve for x
   x = 7,771,369,410.89/101,048.50
6. Step 6: Final answer
   x = 76,907.32