Finding the Fourth Proportional to 72,584,448.10, 108,876,672.15 and 65,865,984.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,584,448.10 : 108,876,672.15 = 65,865,984.10 : x
2. Step 2: Convert to fraction form
   72,584,448.10/108,876,672.15 = 65,865,984.10/x
3. Step 3: Cross multiply
   72,584,448.10x = 108,876,672.15 × 65,865,984.10
4. Step 4: Simplify right side
   72,584,448.10x = 7,171,269,156,692,813
5. Step 5: Solve for x
   x = 7,171,269,156,692,813/72,584,448.10
6. Step 6: Final answer
   x = 98,798,976.15