Finding the Fourth Proportional to 101,089.18, 139,502.66 and 55,769.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101,089.18 : 139,502.66 = 55,769.98 : x
2. Step 2: Convert to fraction form
   101,089.18/139,502.66 = 55,769.98/x
3. Step 3: Cross multiply
   101,089.18x = 139,502.66 × 55,769.98
4. Step 4: Simplify right side
   101,089.18x = 7,780,060,558.15
5. Step 5: Solve for x
   x = 7,780,060,558.15/101,089.18
6. Step 6: Final answer
   x = 76,962.35