Finding the Fourth Proportional to 42,805,622.31, 64,229,428.67 and 20,088,366.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,805,622.31 : 64,229,428.67 = 20,088,366.63 : x
2. Step 2: Convert to fraction form
   42,805,622.31/64,229,428.67 = 20,088,366.63/x
3. Step 3: Cross multiply
   42,805,622.31x = 64,229,428.67 × 20,088,366.63
4. Step 4: Simplify right side
   42,805,622.31x = 1,290,264,311,457,951.25
5. Step 5: Solve for x
   x = 1,290,264,311,457,951.25/42,805,622.31
6. Step 6: Final answer
   x = 30,142,402.84