Finding the Fourth Proportional to 65,173,492.98, 89,831,385.72 and 63,448,389

Step by Step Solution

1. Step 1: Write the proportion equation
   65,173,492.98 : 89,831,385.72 = 63,448,389 : x
2. Step 2: Convert to fraction form
   65,173,492.98/89,831,385.72 = 63,448,389/x
3. Step 3: Cross multiply
   65,173,492.98x = 89,831,385.72 × 63,448,389
4. Step 4: Simplify right side
   65,173,492.98x = 5,699,656,705,571,605
5. Step 5: Solve for x
   x = 5,699,656,705,571,605/65,173,492.98
6. Step 6: Final answer
   x = 87,453,601.84