Finding the Fourth Proportional to 139,016.82, 191,841.90 and 77,762.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,016.82 : 191,841.90 = 77,762.34 : x
2. Step 2: Convert to fraction form
   139,016.82/191,841.90 = 77,762.34/x
3. Step 3: Cross multiply
   139,016.82x = 191,841.90 × 77,762.34
4. Step 4: Simplify right side
   139,016.82x = 14,918,075,054.05
5. Step 5: Solve for x
   x = 14,918,075,054.05/139,016.82
6. Step 6: Final answer
   x = 107,311.30