Finding the Fourth Proportional to 101,087.18, 139,499.90 and 55,767.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101,087.18 : 139,499.90 = 55,767.98 : x
2. Step 2: Convert to fraction form
   101,087.18/139,499.90 = 55,767.98/x
3. Step 3: Cross multiply
   101,087.18x = 139,499.90 × 55,767.98
4. Step 4: Simplify right side
   101,087.18x = 7,779,627,075.12
5. Step 5: Solve for x
   x = 7,779,627,075.12/101,087.18
6. Step 6: Final answer
   x = 76,959.59