Finding the Fourth Proportional to 109,156,936.45, 163,735,404.68 and 78,386,502.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,156,936.45 : 163,735,404.68 = 78,386,502.55 : x
2. Step 2: Convert to fraction form
   109,156,936.45/163,735,404.68 = 78,386,502.55/x
3. Step 3: Cross multiply
   109,156,936.45x = 163,735,404.68 × 78,386,502.55
4. Step 4: Simplify right side
   109,156,936.45x = 12,834,645,716,082,170
5. Step 5: Solve for x
   x = 12,834,645,716,082,170/109,156,936.45
6. Step 6: Final answer
   x = 117,579,753.83