Finding the Fourth Proportional to 101,143,656.18, 139,544,077.59 and 65,845,388.70

Step by Step Solution

1. Step 1: Write the proportion equation
   101,143,656.18 : 139,544,077.59 = 65,845,388.70 : x
2. Step 2: Convert to fraction form
   101,143,656.18/139,544,077.59 = 65,845,388.70/x
3. Step 3: Cross multiply
   101,143,656.18x = 139,544,077.59 × 65,845,388.70
4. Step 4: Simplify right side
   101,143,656.18x = 9,188,334,029,696,510
5. Step 5: Solve for x
   x = 9,188,334,029,696,510/101,143,656.18
6. Step 6: Final answer
   x = 90,844,392.78