Finding the Fourth Proportional to 109,156,937.45, 163,735,406.18 and 78,386,503.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,156,937.45 : 163,735,406.18 = 78,386,503.55 : x
2. Step 2: Convert to fraction form
   109,156,937.45/163,735,406.18 = 78,386,503.55/x
3. Step 3: Cross multiply
   109,156,937.45x = 163,735,406.18 × 78,386,503.55
4. Step 4: Simplify right side
   109,156,937.45x = 12,834,645,997,789,262
5. Step 5: Solve for x
   x = 12,834,645,997,789,262/109,156,937.45
6. Step 6: Final answer
   x = 117,579,755.33