Finding the Fourth Proportional to 72,338,403.51, 107,960,938.75 and 65,356,978.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,338,403.51 : 107,960,938.75 = 65,356,978.68 : x
2. Step 2: Convert to fraction form
   72,338,403.51/107,960,938.75 = 65,356,978.68/x
3. Step 3: Cross multiply
   72,338,403.51x = 107,960,938.75 × 65,356,978.68
4. Step 4: Simplify right side
   72,338,403.51x = 7,056,000,771,870,272
5. Step 5: Solve for x
   x = 7,056,000,771,870,272/72,338,403.51
6. Step 6: Final answer
   x = 97,541,560.63