Finding the Fourth Proportional to 118,698,911.89, 163,805,460.20 and 65,776,503.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,698,911.89 : 163,805,460.20 = 65,776,503.55 : x
2. Step 2: Convert to fraction form
   118,698,911.89/163,805,460.20 = 65,776,503.55/x
3. Step 3: Cross multiply
   118,698,911.89x = 163,805,460.20 × 65,776,503.55
4. Step 4: Simplify right side
   118,698,911.89x = 10,774,550,434,354,682
5. Step 5: Solve for x
   x = 10,774,550,434,354,682/118,698,911.89
6. Step 6: Final answer
   x = 90,772,107.87