Finding the Fourth Proportional to 112,311,888.82, 168,356,230.59 and 78,161,490.22

Step by Step Solution

1. Step 1: Write the proportion equation
   112,311,888.82 : 168,356,230.59 = 78,161,490.22 : x
2. Step 2: Convert to fraction form
   112,311,888.82/168,356,230.59 = 78,161,490.22/x
3. Step 3: Cross multiply
   112,311,888.82x = 168,356,230.59 × 78,161,490.22
4. Step 4: Simplify right side
   112,311,888.82x = 13,158,973,870,736,350
5. Step 5: Solve for x
   x = 13,158,973,870,736,350/112,311,888.82
6. Step 6: Final answer
   x = 117,164,567.43