Finding the Fourth Proportional to 288,462,978.18, 432,690,687.81 and 70,112,685.96

Step by Step Solution

1. Step 1: Write the proportion equation
   288,462,978.18 : 432,690,687.81 = 70,112,685.96 : x
2. Step 2: Convert to fraction form
   288,462,978.18/432,690,687.81 = 70,112,685.96/x
3. Step 3: Cross multiply
   288,462,978.18x = 432,690,687.81 × 70,112,685.96
4. Step 4: Simplify right side
   288,462,978.18x = 30,337,106,312,238,928
5. Step 5: Solve for x
   x = 30,337,106,312,238,928/288,462,978.18
6. Step 6: Final answer
   x = 105,168,110.32