Finding the Fourth Proportional to 105,061,764.15, 145,023,925.05 and 63,247,774.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,061,764.15 : 145,023,925.05 = 63,247,774.05 : x
2. Step 2: Convert to fraction form
   105,061,764.15/145,023,925.05 = 63,247,774.05/x
3. Step 3: Cross multiply
   105,061,764.15x = 145,023,925.05 × 63,247,774.05
4. Step 4: Simplify right side
   105,061,764.15x = 9,172,440,443,406,536
5. Step 5: Solve for x
   x = 9,172,440,443,406,536/105,061,764.15
6. Step 6: Final answer
   x = 87,305,220.10