Finding the Fourth Proportional to 42,849,132.18, 64,265,104.90 and 20,980,088.99

Step by Step Solution

1. Step 1: Write the proportion equation
   42,849,132.18 : 64,265,104.90 = 20,980,088.99 : x
2. Step 2: Convert to fraction form
   42,849,132.18/64,265,104.90 = 20,980,088.99/x
3. Step 3: Cross multiply
   42,849,132.18x = 64,265,104.90 × 20,980,088.99
4. Step 4: Simplify right side
   42,849,132.18x = 1,348,287,619,753,685
5. Step 5: Solve for x
   x = 1,348,287,619,753,685/42,849,132.18
6. Step 6: Final answer
   x = 31,465,925.94