Finding the Fourth Proportional to 168,075,088.72, 231,943,622.88 and 90,812,752.72

Step by Step Solution

1. Step 1: Write the proportion equation
   168,075,088.72 : 231,943,622.88 = 90,812,752.72 : x
2. Step 2: Convert to fraction form
   168,075,088.72/231,943,622.88 = 90,812,752.72/x
3. Step 3: Cross multiply
   168,075,088.72x = 231,943,622.88 × 90,812,752.72
4. Step 4: Simplify right side
   168,075,088.72x = 21,063,438,869,582,372
5. Step 5: Solve for x
   x = 21,063,438,869,582,372/168,075,088.72
6. Step 6: Final answer
   x = 125,321,598.99