Finding the Fourth Proportional to 64,864,078.61, 89,609,654.63 and 42,589,910.08

Step by Step Solution

1. Step 1: Write the proportion equation
   64,864,078.61 : 89,609,654.63 = 42,589,910.08 : x
2. Step 2: Convert to fraction form
   64,864,078.61/89,609,654.63 = 42,589,910.08/x
3. Step 3: Cross multiply
   64,864,078.61x = 89,609,654.63 × 42,589,910.08
4. Step 4: Simplify right side
   64,864,078.61x = 3,816,467,132,543,507.50
5. Step 5: Solve for x
   x = 3,816,467,132,543,507.50/64,864,078.61
6. Step 6: Final answer
   x = 58,837,914.83