Finding the Fourth Proportional to 101,088.68, 139,501.98 and 55,769.47

Step by Step Solution

1. Step 1: Write the proportion equation
   101,088.68 : 139,501.98 = 55,769.47 : x
2. Step 2: Convert to fraction form
   101,088.68/139,501.98 = 55,769.47/x
3. Step 3: Cross multiply
   101,088.68x = 139,501.98 × 55,769.47
4. Step 4: Simplify right side
   101,088.68x = 7,779,951,139.80
5. Step 5: Solve for x
   x = 7,779,951,139.80/101,088.68
6. Step 6: Final answer
   x = 76,961.65